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Berkhamsted Circular Walk

A short easy walk to the South-East of Berkhamsted, along the Grand Union Canal and across fields to Ashley Green for lunch, returning via Hockeridge Wood.

Circular Easy Hertfordshire

Hiking weather forecast

Hertfordshire hourly weather (Visual Crossing)

Sunset: 19:45. Dusk: 20:19. Dark: 21:02. Moon 78% (dusk to 05:11)

Updated: Tue, 08-Apr at 02:39

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Wed, 09 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Thu, 10 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Fri, 11 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sat, 12 Apr 0% 0% 0% 0% 0% 0% 0% 0% 6% 6% 6% 6% 6% 6% 16% 16%
Sun, 13 Apr 32% 32% 36% 36% 36% 36% 36% 36% 39% 39% 39% 39% 39% 39% 16% 16%
Mon, 14 Apr 10% 10% 23% 23% 23% 23% 23% 23% 36% 36% 36% 36% 36% 36% 23% 23%
Tue, 15 Apr 13% 13% 29% 29% 29% 29% 29% 29% 36% 36% 36% 36% 36% 36% 16% 16%
Wed, 16 Apr 19% 19% 55% 55% 55% 55% 55% 55% 58% 58% 58% 58% 58% 58% 23% 23%
Thu, 17 Apr 16% 16% 39% 39% 39% 39% 39% 39% 68% 68% 68% 68% 68% 68% 16% 16%
Fri, 18 Apr 13% 13% 26% 26% 26% 26% 26% 26% 42% 42% 42% 42% 42% 42% 16% 16%
Sat, 19 Apr 23% 23% 36% 36% 36% 36% 36% 36% 52% 52% 52% 52% 52% 52% 26% 26%
Sun, 20 Apr 23% 23% 19% 19% 19% 19% 19% 19% 36% 36% 36% 36% 36% 36% 7% 7%
Mon, 21 Apr 10% 10% 16% 16% 16% 16% 16% 16% 23% 23% 23% 23% 23% 23% 16% 16%
Tue, 22 Apr 19% 19% 32% 32% 32% 32% 32% 32% 39% 39% 39% 39% 39% 39% 10% 10%

Percentages are the chance of rain.

Weather data by Visual Crossing

Hertfordshire hourly weather (Open Meteo)

Sunset: 19:45. Dusk: 20:19. Dark: 21:02. Moon 78% (dusk to 05:11)

Updated: Tue, 08-Apr at 05:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Wed, 09 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Thu, 10 Apr 0% 🌫 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Fri, 11 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sat, 12 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sun, 13 Apr 5% 6% 7% 9% 10% 11% 12% 13% 14% 14% 15% 15% 15% 15% 15% 16%
Mon, 14 Apr 26% 27% 29% 31% 32% 34% 34% 35% 35% 35% 34% 33% 32% 31% 30% 28%
Tue, 15 Apr 25% 26% 26% 27% 27% 28% 28% 28% 20% 25% 29% 30% 30% 29% 27% 25%
Wed, 16 Apr 18% 16% 15% 16% 16% 17% 18% 19% 21% 24% 26% 27% 26% 26% 26% 25%
Thu, 17 Apr 18% 16% 17% 21% 26% 34% 43% 48% 47% 43% 39% 34% 29% 26% 25% 26%
Fri, 18 Apr 14% 16% 18% 20% 22% 24% 27% 29% 32% 35% 37% 39% 40% 39% 35% 29%
Sat, 19 Apr 8% 10% 11% 12% 13% 14% 16% 19% 24% 30% 36% 41% 46% 48% 46% 42%
Sun, 20 Apr 23% 23% 22% 21% 20% 19% 19% 19% 21% 23% 26% 29% 31% 32% 31% 28%
Mon, 21 Apr 13% 13% 14% 15% 17% 19% 21% 23% 25% 28% 30% 31% 32% 32% 30% 26%
Tue, 22 Apr 9% 10% 10% 11% 11% 11% 12% 13% 15% 18% 21% 23% 26% 26% 24% 19%
Wed, 23 Apr 5% 6% 7% 8% 9% 10% 11% 13% 15% 18% 20% 22% 25% 26% 27% 27%

Percentages are the chance of rain.

Weather data by Open-Meteo

Hertfordshire hourly weather (Met Office)

Sunset: 19:45. Dusk: 20:19. Dark: 21:02. Moon 78% (dusk to 05:11)

Updated: Tue, 08-Apr at 02:00

06 09 12 15 18 21
Today 0% 0% 3% 1% 0% 0%
Wed, 09 Apr 2% 2% 1% 0% 0% 0%
Thu, 10 Apr 5% 7% 0% 0% 0% 0%
Fri, 11 Apr 0% 0% 0% 0% 0% 0%
Sat, 12 Apr 1% 0% 1% 2% 2% 3%
Sun, 13 Apr 9% 10% 13% 12% 11% 8%
Mon, 14 Apr 8% 8% 8% 10% 9% 9%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 19:45. Dusk: 20:19. Dark: 21:02. Moon 78% (dusk to 05:11)

Updated: Tue, 08-Apr at 02:38

East England

Chilly with some low cloud overnight. Fine with sunshine Tuesday.

  • Dry with clear spells, with light winds allowing temperatures to fall away and fog patches to form in places inland
  • Some low cloud may move in from coastal districts, with an overnight rural frost possible in places inland
  • Minimum Temperature -2C

Tuesday:

  • Early fog and low cloud should disperse, leaving a fine day with light winds and warm sunny periods
  • Low cloud perhaps again encroaching into coastal districts during the evening
  • Maximum Temperature 16C

Outlook for Wednesday to Friday:

  • Some cold starts remain likely, with areas of fog and some low cloud, retreating to eastern coastal districts to reveal warm sunshine
  • Winds remaining light

UK Day 6-7 and week 2

  • Most areas will be dry and sunny with light winds at first as high pressure extends across much of the UK
  • However, it will be cloudier and breezier in parts of the far north with some light rain or drizzle at times
  • Temperatures will be above normal away from windward coasts
  • A gradual change to a more unsettled weather regime is likely thereafter, with Atlantic frontal systems from the west or showers from the south making inroads across the UK
  • This is expected to herald a wetter period through the middle of April with showers or longer spells of rain at times, which could be heavy and thundery in places
  • Strong winds could develop in some areas, particularly the south and west
  • Temperatures are likely to return closer to normal

UK Week 3 and 4

  • Some unsettled weather is possible at this start of this period with showers or longer spells of rain in places
  • However, a change to more settled conditions is most likely during the latter part of April with high pressure becoming more dominant
  • This settled theme continues into early May, although some spells of wetter, unsettled weather remain possible, especially in the south
  • Temperatures are expected to be above average overall

Weather data by Met Office

Hertfordshire Air Quality (Pollen and UV)

Updated: Tue, 08-Apr at 05:36

Key : Low Medium High Very High

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Today air q     birch air q     birch air q UV   birch air q UV   birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch
Wed, 09 Apr air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q     birch air q     birch air q UV   birch air q UV   birch air q UV   birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch
Thu, 10 Apr air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q     birch air q     birch air q UV   birch air q UV   birch air q UV   birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q UV alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch
Fri, 11 Apr air q   alder birch air q   alder birch air q       air q       air q       air q       air q       air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q UV     air q       air q       air q       air q      

Pollens

These pollens are shown (in season):

  • Grass
  • Alder and birch (trees)
  • Mugwort and Ragweed (weeds)

When out walking, wraparound glasses, a disposable or washable facemask, and being at the front of the group, all help.

Other forecasts: Met Office, University of Worcester

UV and Air Quality

The UV forecast takes account of cloud cover.

"Air Q", the European Air Quality index, is a mix of dust/particulates, ozone, sulphur and nitrous oxides

Data

Weather data by Open-Meteo and CAMS ENSEMBLE

Hertfordshire Visibility

Updated: Tue, 08-Apr at 05:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 19km 13km 15km 30km 45km 60km 70km 74km 75km 76km 76km 76km 76km 76km 75km 73km
Wed, 09 Apr 32km 23km 30km 44km 50km 66km 73km 73km 75km 76km 76km 76km 76km 69km 63km 51km
Thu, 10 Apr 4km 3km 8km 22km 38km 50km 59km 69km 72km 74km 75km 75km 76km 75km 72km 64km
Fri, 11 Apr 33km 30km 41km 52km 64km 68km 71km 75km 76km 77km 77km 77km 77km 76km 69km 62km
Sat, 12 Apr 28km 25km 40km 55km 70km 72km 74km 76km 76km 77km 77km 78km 78km 79km 77km 75km

Visibility in km. Above 50km is 'good'. Humidity and air pollution make it worse. Theoretical maximum is 300km/200 miles in clean dry polar air.

On the South Downs, at ~ 170m/500ft, the horizon is is ~ 45km/30 miles away. On a mountain at 1,000m/3,000ft, it is ~ 160km/100 miles away. Formula: horizon in km = √ (13 x altitude in m)

Weather data by Open-Meteo

Hertfordshire daylight

Date Light Dawn Sunrise Max Ht. Sunset Dusk Dark Day Length
Mon, 07-Apr 05:05 05:47 06:22 13:03 19:45 20:19 21:02 14:32
Tue, 08-Apr 05:02 05:44 06:19 13:02 19:46 20:21 21:04 14:36
Wed, 09-Apr 04:59 05:42 06:17 13:02 19:48 20:23 21:06 14:40
Thu, 10-Apr 04:57 05:40 06:15 13:02 19:50 20:25 21:08 14:45
Fri, 11-Apr 04:54 05:37 06:13 13:01 19:51 20:27 21:10 14:49
Sat, 12-Apr 04:52 05:35 06:10 13:01 19:53 20:29 21:12 14:53
Sun, 13-Apr 04:49 05:33 06:08 13:01 19:55 20:30 21:14 14:57
Mon, 14-Apr 04:46 05:30 06:06 13:01 19:56 20:32 21:17 15:01
Tue, 15-Apr 04:44 05:28 06:04 13:00 19:58 20:34 21:19 15:05
Wed, 16-Apr 04:41 05:26 06:02 13:00 20:00 20:36 21:21 15:10
Thu, 17-Apr 04:39 05:24 06:00 13:00 20:02 20:38 21:23 15:14
Fri, 18-Apr 04:36 05:21 05:57 13:00 20:03 20:40 21:25 15:18
Sat, 19-Apr 04:33 05:19 05:55 13:00 20:05 20:41 21:27 15:22
Sun, 20-Apr 04:31 05:17 05:53 12:59 20:07 20:43 21:30 15:26
Mon, 21-Apr 04:28 05:14 05:51 12:59 20:08 20:45 21:32 15:30
Tue, 22-Apr 04:26 05:12 05:49 12:59 20:10 20:47 21:34 15:34
Wed, 23-Apr 04:23 05:10 05:47 12:59 20:12 20:49 21:36 15:39
Thu, 24-Apr 04:20 05:08 05:45 12:59 20:13 20:51 21:38 15:43
Fri, 25-Apr 04:18 05:05 05:43 12:58 20:15 20:53 21:41 15:47
Sat, 26-Apr 04:15 05:03 05:41 12:58 20:17 20:55 21:43 15:51
Sun, 27-Apr 04:13 05:01 05:39 12:58 20:18 20:56 21:45 15:55
Mon, 28-Apr 04:10 04:59 05:37 12:58 20:20 20:58 21:48 15:59
Tue, 29-Apr 04:08 04:57 05:35 12:58 20:22 21:00 21:50 16:03
Wed, 30-Apr 04:05 04:55 05:33 12:58 20:23 21:02 21:52 16:07
Thu, 01-May 04:02 04:52 05:31 12:58 20:25 21:04 21:54 16:11
Fri, 02-May 04:00 04:50 05:29 12:57 20:27 21:06 21:57 16:15
Sat, 03-May 03:57 04:48 05:27 12:57 20:28 21:08 21:59 16:19
Sun, 04-May 03:55 04:46 05:25 12:57 20:30 21:10 22:02 16:23
Mon, 05-May 03:52 04:44 05:24 12:57 20:32 21:11 22:04 16:27
Tue, 06-May 03:50 04:42 05:22 12:57 20:33 21:13 22:06 16:31
Wed, 07-May 03:47 04:40 05:20 12:57 20:35 21:15 22:09 16:34
Thu, 08-May 03:45 04:38 05:18 12:57 20:37 21:17 22:11 16:38
Fri, 09-May 03:42 04:36 05:17 12:57 20:38 21:19 22:13 16:42
Sat, 10-May 03:40 04:34 05:15 12:57 20:40 21:21 22:16 16:46
Sun, 11-May 03:37 04:32 05:13 12:57 20:41 21:22 22:18 16:50
Mon, 12-May 03:35 04:31 05:12 12:57 20:43 21:24 22:21 16:53
Tue, 13-May 03:33 04:29 05:10 12:57 20:44 21:26 22:23 16:57
Wed, 14-May 03:30 04:27 05:09 12:57 20:46 21:28 22:25 17:00
Thu, 15-May 03:28 04:25 05:07 12:57 20:48 21:30 22:28 17:04
Fri, 16-May 03:25 04:23 05:06 12:57 20:49 21:31 22:30 17:07
Sat, 17-May 03:23 04:22 05:04 12:57 20:51 21:33 22:32 17:11
Sun, 18-May 03:21 04:20 05:03 12:57 20:52 21:35 22:35 17:14
Mon, 19-May 03:19 04:18 05:01 12:57 20:53 21:37 22:37 17:18
Tue, 20-May 03:16 04:17 05:00 12:57 20:55 21:38 22:40 17:21
Wed, 21-May 03:14 04:15 04:59 12:57 20:56 21:40 22:42 17:24
Thu, 22-May 03:12 04:14 04:58 12:57 20:58 21:42 22:44 17:27
Fri, 23-May 03:10 04:12 04:56 12:57 20:59 21:43 22:46 17:30
Sat, 24-May 03:08 04:11 04:55 12:57 21:00 21:45 22:49 17:33
Sun, 25-May 03:06 04:10 04:54 12:57 21:02 21:46 22:51 17:36
Mon, 26-May 03:04 04:08 04:53 12:58 21:03 21:48 22:53 17:39
Tue, 27-May 03:02 04:07 04:52 12:58 21:04 21:49 22:55 17:42
Wed, 28-May 03:00 04:06 04:51 12:58 21:05 21:51 22:58 17:45
Thu, 29-May 02:58 04:04 04:50 12:58 21:07 21:52 23:00 17:47
Fri, 30-May 02:56 04:03 04:49 12:58 21:08 21:54 23:02 17:50
Sat, 31-May 02:54 04:02 04:48 12:58 21:09 21:55 23:04 17:52
Sun, 01-Jun 02:53 04:01 04:47 12:58 21:10 21:56 23:06 17:55
Mon, 02-Jun 02:51 04:00 04:46 12:59 21:11 21:58 23:08 17:57
Tue, 03-Jun 02:49 03:59 04:46 12:59 21:12 21:59 23:10 17:59
Wed, 04-Jun 02:48 03:58 04:45 12:59 21:13 22:00 23:11 18:01
Thu, 05-Jun 02:46 03:58 04:44 12:59 21:14 22:01 23:13 18:03
Fri, 06-Jun 02:45 03:57 04:44 12:59 21:15 22:02 23:15 18:05
Sat, 07-Jun 02:44 03:56 04:43 12:59 21:16 22:03 23:16 18:07
Sun, 08-Jun 02:42 03:55 04:43 13:00 21:17 22:04 23:18 18:08
Mon, 09-Jun 02:41 03:55 04:42 13:00 21:18 22:05 23:19 18:10
Tue, 10-Jun 02:40 03:54 04:42 13:00 21:18 22:06 23:21 18:11
Wed, 11-Jun 02:39 03:54 04:42 13:00 21:19 22:07 23:22 18:13
Thu, 12-Jun 02:39 03:54 04:41 13:00 21:20 22:08 23:23 18:14
Fri, 13-Jun 02:38 03:53 04:41 13:01 21:20 22:08 23:24 18:15
Sat, 14-Jun 02:37 03:53 04:41 13:01 21:21 22:09 23:25 18:16
Sun, 15-Jun 02:37 03:53 04:41 13:01 21:21 22:10 23:26 18:16
Mon, 16-Jun 02:36 03:53 04:41 13:01 21:22 22:10 23:27 18:17
Tue, 17-Jun 02:36 03:53 04:41 13:01 21:22 22:11 23:27 18:18
Wed, 18-Jun 02:36 03:53 04:41 13:02 21:23 22:11 23:28 18:18
Thu, 19-Jun 02:36 03:53 04:41 13:02 21:23 22:11 23:28 18:18
Fri, 20-Jun 02:36 03:53 04:41 13:02 21:23 22:12 23:29 18:18
Sat, 21-Jun 02:36 03:53 04:41 13:02 21:23 22:12 23:29 18:18
Sun, 22-Jun 02:36 03:53 04:42 13:03 21:23 22:12 23:29 18:18
Mon, 23-Jun 02:37 03:53 04:42 13:03 21:24 22:12 23:29 18:18
Tue, 24-Jun 02:37 03:54 04:42 13:03 21:24 22:12 23:29 18:18
Wed, 25-Jun 02:38 03:54 04:43 13:03 21:24 22:12 23:28 18:17
Thu, 26-Jun 02:38 03:55 04:43 13:03 21:24 22:12 23:28 18:17
Fri, 27-Jun 02:39 03:55 04:44 13:04 21:23 22:12 23:27 18:16
Sat, 28-Jun 02:40 03:56 04:44 13:04 21:23 22:11 23:27 18:15
Sun, 29-Jun 02:41 03:57 04:45 13:04 21:23 22:11 23:26 18:14
Mon, 30-Jun 02:42 03:57 04:45 13:04 21:23 22:11 23:25 18:13
Tue, 01-Jul 02:44 03:58 04:46 13:04 21:22 22:10 23:24 18:12
Wed, 02-Jul 02:45 03:59 04:47 13:05 21:22 22:10 23:23 18:10
Thu, 03-Jul 02:46 04:00 04:47 13:05 21:22 22:09 23:22 18:09
Fri, 04-Jul 02:48 04:01 04:48 13:05 21:21 22:08 23:21 18:07
Sat, 05-Jul 02:49 04:02 04:49 13:05 21:21 22:08 23:20 18:05
Sun, 06-Jul 02:51 04:03 04:50 13:05 21:20 22:07 23:18 18:04
Mon, 07-Jul 02:53 04:04 04:51 13:05 21:19 22:06 23:17 18:02
Tue, 08-Jul 02:54 04:05 04:52 13:06 21:19 22:05 23:15 18:00
Wed, 09-Jul 02:56 04:06 04:53 13:06 21:18 22:04 23:14 17:57
Thu, 10-Jul 02:58 04:08 04:54 13:06 21:17 22:03 23:12 17:55
Fri, 11-Jul 03:00 04:09 04:55 13:06 21:16 22:02 23:11 17:53
Sat, 12-Jul 03:02 04:10 04:56 13:06 21:16 22:01 23:09 17:51
Sun, 13-Jul 03:04 04:12 04:57 13:06 21:15 22:00 23:07 17:48
Mon, 14-Jul 03:06 04:13 04:58 13:06 21:14 21:59 23:05 17:45
Tue, 15-Jul 03:08 04:14 05:00 13:07 21:13 21:58 23:03 17:43
Wed, 16-Jul 03:10 04:16 05:01 13:07 21:12 21:56 23:01 17:40
Thu, 17-Jul 03:12 04:17 05:02 13:07 21:11 21:55 22:59 17:37
Fri, 18-Jul 03:15 04:19 05:03 13:07 21:09 21:54 22:57 17:34
Sat, 19-Jul 03:17 04:20 05:05 13:07 21:08 21:52 22:55 17:31
Sun, 20-Jul 03:19 04:22 05:06 13:07 21:07 21:51 22:53 17:28
Mon, 21-Jul 03:21 04:24 05:07 13:07 21:06 21:49 22:51 17:25
Tue, 22-Jul 03:24 04:25 05:09 13:07 21:04 21:48 22:48 17:22
Wed, 23-Jul 03:26 04:27 05:10 13:07 21:03 21:46 22:46 17:19
Thu, 24-Jul 03:28 04:28 05:11 13:07 21:02 21:44 22:44 17:15
Fri, 25-Jul 03:31 04:30 05:13 13:07 21:00 21:43 22:42 17:12
Sat, 26-Jul 03:33 04:32 05:14 13:07 20:59 21:41 22:39 17:09
Sun, 27-Jul 03:35 04:34 05:16 13:07 20:57 21:39 22:37 17:05
Mon, 28-Jul 03:38 04:35 05:17 13:07 20:56 21:38 22:35 17:02
Tue, 29-Jul 03:40 04:37 05:19 13:07 20:54 21:36 22:32 16:58
Wed, 30-Jul 03:42 04:39 05:20 13:07 20:53 21:34 22:30 16:55
Thu, 31-Jul 03:45 04:40 05:22 13:07 20:51 21:32 22:27 16:51
Fri, 01-Aug 03:47 04:42 05:23 13:07 20:49 21:30 22:25 16:47
Sat, 02-Aug 03:49 04:44 05:25 13:07 20:48 21:28 22:22 16:44
Sun, 03-Aug 03:52 04:46 05:26 13:07 20:46 21:26 22:20 16:40
Mon, 04-Aug 03:54 04:48 05:28 13:07 20:44 21:24 22:17 16:36
Tue, 05-Aug 03:56 04:49 05:29 13:06 20:42 21:22 22:15 16:32
Wed, 06-Aug 03:58 04:51 05:31 13:06 20:41 21:20 22:12 16:29
Thu, 07-Aug 04:01 04:53 05:33 13:06 20:39 21:18 22:10 16:25
Fri, 08-Aug 04:03 04:55 05:34 13:06 20:37 21:16 22:07 16:21
Sat, 09-Aug 04:05 04:57 05:36 13:06 20:35 21:14 22:05 16:17
Sun, 10-Aug 04:08 04:58 05:37 13:06 20:33 21:12 22:02 16:13
Mon, 11-Aug 04:10 05:00 05:39 13:06 20:31 21:10 22:00 16:09
Tue, 12-Aug 04:12 05:02 05:41 13:05 20:29 21:08 21:57 16:05
Wed, 13-Aug 04:14 05:04 05:42 13:05 20:27 21:05 21:54 16:01
Thu, 14-Aug 04:17 05:06 05:44 13:05 20:25 21:03 21:52 15:57
Fri, 15-Aug 04:19 05:07 05:45 13:05 20:23 21:01 21:49 15:53
Sat, 16-Aug 04:21 05:09 05:47 13:05 20:21 20:59 21:47 15:49
Sun, 17-Aug 04:23 05:11 05:49 13:04 20:19 20:57 21:44 15:45
Mon, 18-Aug 04:25 05:13 05:50 13:04 20:17 20:54 21:41 15:41
Tue, 19-Aug 04:28 05:15 05:52 13:04 20:15 20:52 21:39 15:37
Wed, 20-Aug 04:30 05:16 05:53 13:04 20:13 20:50 21:36 15:33
Thu, 21-Aug 04:32 05:18 05:55 13:04 20:11 20:48 21:34 15:29
Fri, 22-Aug 04:34 05:20 05:57 13:03 20:09 20:45 21:31 15:25
Sat, 23-Aug 04:36 05:22 05:58 13:03 20:07 20:43 21:28 15:21
Sun, 24-Aug 04:38 05:24 06:00 13:03 20:05 20:41 21:26 15:17
Mon, 25-Aug 04:40 05:25 06:01 13:02 20:02 20:38 21:23 15:13
Tue, 26-Aug 04:42 05:27 06:03 13:02 20:00 20:36 21:21 15:08
Wed, 27-Aug 04:44 05:29 06:05 13:02 19:58 20:34 21:18 15:04
Thu, 28-Aug 04:46 05:31 06:06 13:02 19:56 20:31 21:15 15:00
Fri, 29-Aug 04:48 05:32 06:08 13:01 19:54 20:29 21:13 14:56
Sat, 30-Aug 04:50 05:34 06:10 13:01 19:51 20:27 21:10 14:52
Sun, 31-Aug 04:52 05:36 06:11 13:01 19:49 20:24 21:07 14:48
Mon, 01-Sep 04:54 05:38 06:13 13:00 19:47 20:22 21:05 14:44
Tue, 02-Sep 04:56 05:39 06:14 13:00 19:45 20:20 21:02 14:40
Wed, 03-Sep 04:58 05:41 06:16 13:00 19:42 20:17 21:00 14:36
Thu, 04-Sep 05:00 05:43 06:18 12:59 19:40 20:15 20:57 14:31
Fri, 05-Sep 05:02 05:45 06:19 12:59 19:38 20:12 20:54 14:27
Sat, 06-Sep 05:04 05:46 06:21 12:59 19:36 20:10 20:52 14:23
Sun, 07-Sep 05:06 05:48 06:22 12:58 19:33 20:08 20:49 14:19
Mon, 08-Sep 05:08 05:50 06:24 12:58 19:31 20:05 20:47 14:15
Tue, 09-Sep 05:10 05:51 06:26 12:58 19:29 20:03 20:44 14:11
Wed, 10-Sep 05:12 05:53 06:27 12:57 19:26 20:00 20:42 14:07
Thu, 11-Sep 05:14 05:55 06:29 12:57 19:24 19:58 20:39 14:03
Fri, 12-Sep 05:15 05:56 06:31 12:57 19:22 19:56 20:37 13:59
Sat, 13-Sep 05:17 05:58 06:32 12:56 19:19 19:53 20:34 13:55
Sun, 14-Sep 05:19 06:00 06:34 12:56 19:17 19:51 20:31 13:51
Mon, 15-Sep 05:21 06:01 06:35 12:56 19:15 19:49 20:29 13:47
Tue, 16-Sep 05:23 06:03 06:37 12:55 19:12 19:46 20:26 13:42
Wed, 17-Sep 05:24 06:05 06:39 12:55 19:10 19:44 20:24 13:38
Thu, 18-Sep 05:26 06:06 06:40 12:55 19:08 19:41 20:21 13:34
Fri, 19-Sep 05:28 06:08 06:42 12:54 19:05 19:39 20:19 13:30
Sat, 20-Sep 05:30 06:10 06:43 12:54 19:03 19:37 20:16 13:26
Sun, 21-Sep 05:32 06:11 06:45 12:53 19:01 19:34 20:14 13:22
Mon, 22-Sep 05:33 06:13 06:47 12:53 18:58 19:32 20:12 13:18
Tue, 23-Sep 05:35 06:15 06:48 12:53 18:56 19:30 20:09 13:14
Wed, 24-Sep 05:37 06:16 06:50 12:52 18:54 19:27 20:07 13:10
Thu, 25-Sep 05:39 06:18 06:52 12:52 18:51 19:25 20:04 13:06
Fri, 26-Sep 05:40 06:20 06:53 12:52 18:49 19:23 20:02 13:02
Sat, 27-Sep 05:42 06:21 06:55 12:51 18:47 19:20 19:59 12:58
Sun, 28-Sep 05:44 06:23 06:57 12:51 18:45 19:18 19:57 12:54
Mon, 29-Sep 05:46 06:25 06:58 12:51 18:42 19:16 19:55 12:50
Tue, 30-Sep 05:47 06:26 07:00 12:50 18:40 19:13 19:52 12:46
Wed, 01-Oct 05:49 06:28 07:02 12:50 18:38 19:11 19:50 12:42
Thu, 02-Oct 05:51 06:30 07:03 12:50 18:35 19:09 19:48 12:39
Fri, 03-Oct 05:52 06:31 07:05 12:49 18:33 19:06 19:45 12:35

Notes

  • Max Height (solar noon) is when the sun is highest in the sky.
  • Day length is dawn to dusk as there is enough light for walking for at least 30 minutes before sunrise and after sunset, even on an overcast day.
  • At 'Light' (nautical dawn) the horizon becomes visible. At 'Dawn' (civil dawn) there is enough light to read, and drivers can switch their lights off. Finally the sun rises.
  • After sunset, there is still enough light to read until 'Dusk' (civil dusk) or lighting up time for drivers. The horizon is still visible until 'Dark' (nautical dusk).
  • Times will vary if there is a hill on the horizon.

Hertfordshire moonlight

Moonlight chart for walking at night.

Night of Sunset Dusk Moon Visible Dawn Sunrise Phase % Full Max. Ht. Night Walk
Mon, 07-Apr 19:45 20:19 dusk 05:11 05:44 06:19 78 % 21:33 after dusk
Tue, 08-Apr 19:46 20:21 dusk 05:23 05:42 06:17 86 % 22:17 after dusk
Wed, 09-Apr 19:48 20:23 dusk 05:32 05:40 06:15 92 % 22:58 after dusk
Thu, 10-Apr 19:50 20:25 dusk dawn 05:37 06:13 96 % 23:38 all night
Fri, 11-Apr 19:51 20:27 dusk dawn 05:35 06:10 99 % 00:17 all night
Sat, 12-Apr 19:53 20:29 dusk dawn 05:33 06:08 100 % 00:57 all night
Sun, 13-Apr 19:55 20:30 20:53 dawn 05:30 06:06 99 % 01:38 before dawn
Mon, 14-Apr 19:56 20:32 22:06 dawn 05:28 06:04 97 % 02:22 before dawn
Tue, 15-Apr 19:58 20:34 23:21 dawn 05:26 06:02 92 % 03:08 before dawn
Wed, 16-Apr 20:00 20:36 00:33 dawn 05:24 06:00 87 % 03:58 before dawn
Thu, 17-Apr 20:02 20:38 01:39 dawn 05:21 05:57 79 % 04:50 before dawn
Fri, 18-Apr 20:03 20:40 02:33 dawn 05:19 05:55 71 % 05:44
Sat, 19-Apr 20:05 20:41 03:13 dawn 05:17 05:53 61 % 06:38
Sun, 20-Apr 20:07 20:43 03:41 dawn 05:14 05:51 51 % 07:31
Mon, 21-Apr 20:08 20:45 04:02 dawn 05:12 05:49 41 % 08:23
Tue, 22-Apr 20:10 20:47 04:18 dawn 05:10 05:47 30 % 09:12
Wed, 23-Apr 20:12 20:49 04:31 dawn 05:08 05:45 20 % 10:01
Thu, 24-Apr 20:13 20:51 04:43 dawn 05:05 05:43 12 % 10:51
Fri, 25-Apr 20:15 20:53 04:56 dawn 05:03 05:41 5 % 11:42
Sat, 26-Apr 20:17 20:55 05:01 05:39 1 %
Sun, 27-Apr 20:18 20:56 04:59 05:37 0 % 12:36
Mon, 28-Apr 20:20 20:58 dusk 22:03 04:57 05:35 2 % 13:33
Tue, 29-Apr 20:22 21:00 dusk 23:37 04:55 05:33 7 % 14:35
Wed, 30-Apr 20:23 21:02 dusk 00:57 04:52 05:31 14 % 15:39
Thu, 01-May 20:25 21:04 dusk 01:56 04:50 05:29 23 % 16:43
Fri, 02-May 20:27 21:06 dusk 02:34 04:48 05:27 33 % 17:44
Sat, 03-May 20:28 21:08 dusk 03:00 04:46 05:25 44 % 18:40
Sun, 04-May 20:30 21:10 dusk 03:18 04:44 05:24 54 % 19:30
Mon, 05-May 20:32 21:11 dusk 03:31 04:42 05:22 64 % 20:16
Tue, 06-May 20:33 21:13 dusk 03:41 04:40 05:20 73 % 20:58
Wed, 07-May 20:35 21:15 dusk 03:51 04:38 05:18 81 % 21:38 after dusk
Thu, 08-May 20:37 21:17 dusk 04:00 04:36 05:17 88 % 22:17 after dusk
Fri, 09-May 20:38 21:19 dusk 04:09 04:34 05:15 93 % 22:56 after dusk
Sat, 10-May 20:40 21:21 dusk 04:21 04:32 05:13 97 % 23:37 after dusk
Sun, 11-May 20:41 21:22 dusk dawn 04:31 05:12 99 % 00:20 all night
Mon, 12-May 20:43 21:24 dusk dawn 04:29 05:10 100 % 01:06 all night
Tue, 13-May 20:44 21:26 22:23 dawn 04:27 05:09 98 % 01:55 before dawn
Wed, 14-May 20:46 21:28 23:31 dawn 04:25 05:07 95 % 02:46 before dawn
Thu, 15-May 20:48 21:30 00:28 dawn 04:23 05:06 90 % 03:40 before dawn
Fri, 16-May 20:49 21:31 01:12 dawn 04:22 05:04 84 % 04:34 before dawn
Sat, 17-May 20:51 21:33 01:44 dawn 04:20 05:03 76 % 05:26 before dawn
Sun, 18-May 20:52 21:35 02:07 dawn 04:18 05:01 66 % 06:17
Mon, 19-May 20:53 21:37 02:24 dawn 04:17 05:00 56 % 07:06
Tue, 20-May 20:55 21:38 02:37 dawn 04:15 04:59 45 % 07:54
Wed, 21-May 20:56 21:40 02:49 dawn 04:14 04:58 34 % 08:41
Thu, 22-May 20:58 21:42 03:01 dawn 04:12 04:56 24 % 09:29
Fri, 23-May 20:59 21:43 03:14 dawn 04:11 04:55 14 % 10:20
Sat, 24-May 21:00 21:45 03:30 dawn 04:10 04:54 7 % 11:15
Sun, 25-May 21:02 21:46 04:08 04:53 2 %
Mon, 26-May 21:03 21:48 04:07 04:52 0 % 12:14
Tue, 27-May 21:04 21:49 dusk 22:29 04:06 04:51 1 % 13:18
Wed, 28-May 21:05 21:51 dusk 23:40 04:04 04:50 5 % 14:23
Thu, 29-May 21:07 21:52 dusk 00:29 04:03 04:49 11 % 15:28
Fri, 30-May 21:08 21:54 dusk 01:00 04:02 04:48 19 % 16:28
Sat, 31-May 21:09 21:55 dusk 01:22 04:01 04:47 28 % 17:22
Sun, 01-Jun 21:10 21:56 dusk 01:37 04:00 04:46 38 % 18:10
Mon, 02-Jun 21:11 21:58 dusk 01:48 03:59 04:46 48 % 18:55
Tue, 03-Jun 21:12 21:59 dusk 01:58 03:58 04:45 58 % 19:36
Wed, 04-Jun 21:13 22:00 dusk 02:08 03:58 04:44 67 % 20:16
Thu, 05-Jun 21:14 22:01 dusk 02:17 03:57 04:44 76 % 20:55 after dusk
Fri, 06-Jun 21:15 22:02 dusk 02:28 03:56 04:43 83 % 21:35 after dusk
Sat, 07-Jun 21:16 22:03 dusk 02:41 03:55 04:43 90 % 22:17 after dusk
Sun, 08-Jun 21:17 22:04 dusk 02:59 03:55 04:42 95 % 23:02 after dusk
Mon, 09-Jun 21:18 22:05 dusk 03:23 03:54 04:42 98 % 23:50 after dusk
Tue, 10-Jun 21:18 22:06 dusk dawn 03:54 04:42 100 % 00:41 all night
Wed, 11-Jun 21:19 22:07 22:23 dawn 03:54 04:41 99 % 01:35 before dawn
Thu, 12-Jun 21:20 22:08 23:11 dawn 03:53 04:41 97 % 02:29 before dawn
Fri, 13-Jun 21:20 22:08 23:47 dawn 03:53 04:41 93 % 03:23 before dawn
Sat, 14-Jun 21:21 22:09 00:12 dawn 03:53 04:41 87 % 04:14 before dawn
Sun, 15-Jun 21:21 22:10 00:30 dawn 03:53 04:41 79 % 05:04 before dawn
Mon, 16-Jun 21:22 22:10 00:44 dawn 03:53 04:41 70 % 05:51
Tue, 17-Jun 21:22 22:11 00:56 dawn 03:53 04:41 60 % 06:37
Wed, 18-Jun 21:23 22:11 01:08 dawn 03:53 04:41 48 % 07:23
Thu, 19-Jun 21:23 22:11 01:20 dawn 03:53 04:41 37 % 08:11
Fri, 20-Jun 21:23 22:12 01:34 dawn 03:53 04:41 26 % 09:03
Sat, 21-Jun 21:23 22:12 01:52 dawn 03:53 04:42 17 % 09:58
Sun, 22-Jun 21:23 22:12 02:17 dawn 03:53 04:42 9 % 10:59
Mon, 23-Jun 21:24 22:12 03:54 04:42 3 %
Tue, 24-Jun 21:24 22:12 03:51 dawn 03:54 04:43 1 % 12:03
Wed, 25-Jun 21:24 22:12 dusk 22:18 03:55 04:43 1 % 13:08
Thu, 26-Jun 21:24 22:12 dusk 22:57 03:55 04:44 3 % 14:11
Fri, 27-Jun 21:23 22:12 dusk 23:23 03:56 04:44 8 % 15:08
Sat, 28-Jun 21:23 22:11 dusk 23:41 03:57 04:45 15 % 16:01
Sun, 29-Jun 21:23 22:11 dusk 23:54 03:57 04:45 23 % 16:48
Mon, 30-Jun 21:23 22:11 dusk 00:05 03:58 04:46 32 % 17:31
Tue, 01-Jul 21:22 22:10 dusk 00:15 03:59 04:47 42 % 18:12
Wed, 02-Jul 21:22 22:10 dusk 00:24 04:00 04:47 52 % 18:52
Thu, 03-Jul 21:22 22:09 dusk 00:35 04:01 04:48 61 % 19:32
Fri, 04-Jul 21:21 22:08 dusk 00:47 04:02 04:49 70 % 20:13
Sat, 05-Jul 21:21 22:08 dusk 01:03 04:03 04:50 78 % 20:57 after dusk
Sun, 06-Jul 21:20 22:07 dusk 01:24 04:04 04:51 85 % 21:44 after dusk
Mon, 07-Jul 21:19 22:06 dusk 01:55 04:05 04:52 92 % 22:34 after dusk
Tue, 08-Jul 21:19 22:05 dusk 02:39 04:06 04:53 96 % 23:27 after dusk
Wed, 09-Jul 21:18 22:04 dusk 03:39 04:08 04:54 99 % 00:22 after dusk
Thu, 10-Jul 21:17 22:03 dusk dawn 04:09 04:55 100 % 01:17 all night
Fri, 11-Jul 21:16 22:02 22:16 dawn 04:10 04:56 99 % 02:10 before dawn
Sat, 12-Jul 21:16 22:01 22:36 dawn 04:12 04:57 95 % 03:00 before dawn
Sun, 13-Jul 21:15 22:00 22:52 dawn 04:13 04:58 90 % 03:49 before dawn
Mon, 14-Jul 21:14 21:59 23:04 dawn 04:14 05:00 82 % 04:35 before dawn
Tue, 15-Jul 21:13 21:58 23:16 dawn 04:16 05:01 73 % 05:22
Wed, 16-Jul 21:12 21:56 23:27 dawn 04:17 05:02 62 % 06:09
Thu, 17-Jul 21:11 21:55 23:40 dawn 04:19 05:03 51 % 06:58
Fri, 18-Jul 21:09 21:54 23:56 dawn 04:20 05:05 39 % 07:50
Sat, 19-Jul 21:08 21:52 00:17 dawn 04:22 05:06 29 % 08:47
Sun, 20-Jul 21:07 21:51 00:49 dawn 04:24 05:07 19 % 09:48
Mon, 21-Jul 21:06 21:49 01:36 dawn 04:25 05:09 11 % 10:52
Tue, 22-Jul 21:04 21:48 02:43 dawn 04:27 05:10 5 % 11:55
Wed, 23-Jul 21:03 21:46 04:28 05:11 1 %
Thu, 24-Jul 21:02 21:44 04:30 05:13 0 % 12:54
Fri, 25-Jul 21:00 21:43 dusk 21:45 04:32 05:14 2 % 13:49
Sat, 26-Jul 20:59 21:41 dusk 22:00 04:34 05:16 5 % 14:38
Sun, 27-Jul 20:57 21:39 dusk 22:12 04:35 05:17 11 % 15:24
Mon, 28-Jul 20:56 21:38 dusk 22:22 04:37 05:19 18 % 16:06
Tue, 29-Jul 20:54 21:36 dusk 22:31 04:39 05:20 26 % 16:47
Wed, 30-Jul 20:53 21:34 dusk 22:41 04:40 05:22 35 % 17:27
Thu, 31-Jul 20:51 21:32 dusk 22:53 04:42 05:23 45 % 18:08
Fri, 01-Aug 20:49 21:30 dusk 23:07 04:44 05:25 54 % 18:51
Sat, 02-Aug 20:48 21:28 dusk 23:26 04:46 05:26 64 % 19:37
Sun, 03-Aug 20:46 21:26 dusk 23:52 04:48 05:28 72 % 20:26
Mon, 04-Aug 20:44 21:24 dusk 00:30 04:49 05:29 81 % 21:17 after dusk
Tue, 05-Aug 20:42 21:22 dusk 01:24 04:51 05:31 88 % 22:11 after dusk
Wed, 06-Aug 20:41 21:20 dusk 02:32 04:53 05:33 94 % 23:06 after dusk
Thu, 07-Aug 20:39 21:18 dusk 03:52 04:55 05:34 98 % 00:01 after dusk
Fri, 08-Aug 20:37 21:16 dusk dawn 04:57 05:36 100 % 00:53 all night
Sat, 09-Aug 20:35 21:14 dusk dawn 04:58 05:37 99 % 01:43 all night
Sun, 10-Aug 20:33 21:12 dusk dawn 05:00 05:39 97 % 02:31 all night
Mon, 11-Aug 20:31 21:10 21:24 dawn 05:02 05:41 92 % 03:19 before dawn
Tue, 12-Aug 20:29 21:08 21:35 dawn 05:04 05:42 84 % 04:06 before dawn
Wed, 13-Aug 20:27 21:05 21:47 dawn 05:06 05:44 75 % 04:55 before dawn
Thu, 14-Aug 20:25 21:03 22:02 dawn 05:07 05:45 64 % 05:47
Fri, 15-Aug 20:23 21:01 22:22 dawn 05:09 05:47 53 % 06:42
Sat, 16-Aug 20:21 20:59 22:49 dawn 05:11 05:49 42 % 07:41
Sun, 17-Aug 20:19 20:57 23:30 dawn 05:13 05:50 31 % 08:43
Mon, 18-Aug 20:17 20:54 00:28 dawn 05:15 05:52 21 % 09:44
Tue, 19-Aug 20:15 20:52 01:44 dawn 05:16 05:53 12 % 10:44
Wed, 20-Aug 20:13 20:50 03:08 dawn 05:18 05:55 6 % 11:39
Thu, 21-Aug 20:11 20:48 05:20 05:57 2 %
Fri, 22-Aug 20:09 20:45 05:22 05:58 0 % 12:30
Sat, 23-Aug 20:07 20:43 05:24 06:00 1 % 13:17
Sun, 24-Aug 20:05 20:41 05:25 06:01 3 % 14:00
Mon, 25-Aug 20:02 20:38 dusk 20:39 05:27 06:03 7 % 14:42
Tue, 26-Aug 20:00 20:36 dusk 20:49 05:29 06:05 13 % 15:22
Wed, 27-Aug 19:58 20:34 dusk 20:59 05:31 06:06 21 % 16:03
Thu, 28-Aug 19:56 20:31 dusk 21:12 05:32 06:08 29 % 16:46
Fri, 29-Aug 19:54 20:29 dusk 21:29 05:34 06:10 38 % 17:30
Sat, 30-Aug 19:51 20:27 dusk 21:51 05:36 06:11 47 % 18:17
Sun, 31-Aug 19:49 20:24 dusk 22:24 05:38 06:13 57 % 19:07
Mon, 01-Sep 19:47 20:22 dusk 23:10 05:39 06:14 66 % 20:00
Tue, 02-Sep 19:45 20:20 dusk 00:11 05:41 06:16 75 % 20:54 after dusk
Wed, 03-Sep 19:42 20:17 dusk 01:26 05:43 06:18 83 % 21:48 after dusk
Thu, 04-Sep 19:40 20:15 dusk 02:49 05:45 06:19 91 % 22:41 after dusk
Fri, 05-Sep 19:38 20:12 dusk 04:15 05:46 06:21 96 % 23:32 after dusk
Sat, 06-Sep 19:36 20:10 dusk 05:41 05:48 06:22 99 % 00:22 after dusk
Sun, 07-Sep 19:33 20:08 dusk dawn 05:50 06:24 100 % 01:10 all night
Mon, 08-Sep 19:31 20:05 dusk dawn 05:51 06:26 98 % 01:59 all night
Tue, 09-Sep 19:29 20:03 dusk dawn 05:53 06:27 93 % 02:49 all night
Wed, 10-Sep 19:26 20:00 20:09 dawn 05:55 06:29 86 % 03:41 before dawn
Thu, 11-Sep 19:24 19:58 20:27 dawn 05:56 06:31 77 % 04:36 before dawn
Fri, 12-Sep 19:22 19:56 20:52 dawn 05:58 06:32 67 % 05:35
Sat, 13-Sep 19:19 19:53 21:28 dawn 06:00 06:34 56 % 06:37
Sun, 14-Sep 19:17 19:51 22:21 dawn 06:01 06:35 44 % 07:39
Mon, 15-Sep 19:15 19:49 23:31 dawn 06:03 06:37 33 % 08:38
Tue, 16-Sep 19:12 19:46 00:52 dawn 06:05 06:39 24 % 09:34
Wed, 17-Sep 19:10 19:44 02:16 dawn 06:06 06:40 15 % 10:26
Thu, 18-Sep 19:08 19:41 03:38 dawn 06:08 06:42 8 % 11:13
Fri, 19-Sep 19:05 19:39 04:57 dawn 06:10 06:43 4 % 11:56
Sat, 20-Sep 19:03 19:37 06:11 06:45 1 %
Sun, 21-Sep 19:01 19:34 06:13 06:47 0 % 12:38
Mon, 22-Sep 18:58 19:32 06:15 06:48 1 % 13:19
Tue, 23-Sep 18:56 19:30 06:16 06:50 4 % 14:00
Wed, 24-Sep 18:54 19:27 06:18 06:52 9 % 14:41
Thu, 25-Sep 18:51 19:25 dusk 19:34 06:20 06:53 15 % 15:25
Fri, 26-Sep 18:49 19:23 dusk 19:54 06:21 06:55 23 % 16:11
Sat, 27-Sep 18:47 19:20 dusk 20:22 06:23 06:57 31 % 17:00
Sun, 28-Sep 18:45 19:18 dusk 21:02 06:25 06:58 40 % 17:51
Mon, 29-Sep 18:42 19:16 dusk 21:56 06:26 07:00 50 % 18:43
Tue, 30-Sep 18:40 19:13 dusk 23:04 06:28 07:02 60 % 19:36
Wed, 01-Oct 18:38 19:11 dusk 00:22 06:30 07:03 69 % 20:29
Thu, 02-Oct 18:35 19:09 dusk 01:45 06:31 07:05 79 % 21:20 after dusk
Fri, 03-Oct 18:33 19:06 dusk 03:10 06:33 07:07 87 % 22:09 after dusk

Notes

  • The percentage of the moon which is illuminated doesn't vary much with location.
  • A full moon is not just bigger, it is much brighter. A quarter moon (1/2 disk visible) give less than 5% of the illumination of a full moon. You can walk with a quarter moon if its high in the sky (after dusk for a growing moon, before dawn for a shrinking moon).
  • Sky glow (light reflected by air or clouds) from nearby cities, and especially snow on the ground also effect light levels.
  • Times will vary a few minutes, as (i) these figures are for the centre of the county the walk is in, (ii) if there are hills on the horizon, and (iii) if you are on a hill
  • Sunlight is ~ 1,000,000 times brighter than moonlight.
  • Of course, you need a cloudless night as well!

Hertfordshire weather (Accuweather)

Now would be a good time for a cup of tea.