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Broxbourne Circular Walk

Along the New River and up through the Spital Brook valley into Broxbourne Woods National Nature Reserve and an assortment of ancient, diverse and wild woods.

Circular Hertfordshire

Hiking weather forecast

Hertfordshire hourly weather (Visual Crossing)

Sunset: 18:28. Dusk: 19:02. Dark: 19:42. Moon not visible

Updated: Fri, 28-Mar at 20:39

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 100% 100% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sat, 29 Mar 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sun, 30 Mar 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Mon, 31 Mar 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Tue, 01 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Wed, 02 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Thu, 03 Apr 0% 0% 0% 0% 0% 0% 0% 0% 3% 3% 3% 3% 3% 3% 0% 0%
Fri, 04 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sat, 05 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sun, 06 Apr 0% 0% 3% 3% 3% 3% 3% 3% 7% 7% 7% 7% 7% 7% 0% 0%
Mon, 07 Apr 0% 0% 3% 3% 3% 3% 3% 3% 10% 10% 10% 10% 10% 10% 3% 3%
Tue, 08 Apr 7% 7% 10% 10% 10% 10% 10% 10% 13% 13% 13% 13% 13% 13% 19% 19%
Wed, 09 Apr 7% 7% 10% 10% 10% 10% 10% 10% 7% 7% 7% 7% 7% 7% 7% 7%
Thu, 10 Apr 10% 10% 7% 7% 7% 7% 7% 7% 16% 16% 16% 16% 16% 16% 13% 13%
Fri, 11 Apr 7% 7% 13% 13% 13% 13% 13% 13% 19% 19% 19% 19% 19% 19% 7% 7%

Percentages are the chance of rain.

Weather data by Visual Crossing

Hertfordshire hourly weather (Open Meteo)

Sunset: 18:28. Dusk: 19:02. Dark: 19:42. Moon not visible

Updated: Fri, 28-Mar at 23:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Sat, 29 Mar 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sun, 30 Mar 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Mon, 31 Mar 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Tue, 01 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Wed, 02 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Thu, 03 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Fri, 04 Apr 2% 3% 3% 4% 4% 4% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
Sat, 05 Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 1% 2%
Sun, 06 Apr 2% 3% 3% 3% 3% 4% 5% 6% 8% 9% 10% 8% 5% 3% 2% 1%
Mon, 07 Apr 4% 3% 2% 1% 0% 0% 0% 0% 0% 0% 7% 8% 10% 10% 9% 7%
Tue, 08 Apr 0% 0% 1% 2% 3% 4% 5% 6% 7% 9% 10% 11% 12% 13% 13% 13%
Wed, 09 Apr 16% 16% 15% 13% 11% 9% 7% 6% 7% 9% 11% 13% 15% 16% 15% 14%
Thu, 10 Apr 0% 0% 0% 1% 2% 3% 4% 6% 8% 11% 14% 16% 18% 19% 18% 15%
Fri, 11 Apr 9% 10% 11% 11% 12% 13% 14% 16% 18% 21% 24% 26% 29% 29% 27% 22%
Sat, 12 Apr 11% 13% 15% 18% 20% 22% 24% 26% 27% 28% 28% 28% 27% 26% 23% 20%

Percentages are the chance of rain.

Weather data by Open-Meteo

Hertfordshire hourly weather (Met Office)

Sunset: 18:28. Dusk: 19:02. Dark: 19:42. Moon not visible

Updated: Fri, 28-Mar at 20:00

06 09 12 15 18 21
Today 0%
Sat, 29 Mar 0% 0% 0% 0% 1% 5%
Sun, 30 Mar 5% 1% 0% 0% 1% 1%
Mon, 31 Mar 0% 0% 0% 1% 0% 0%
Tue, 01 Apr 1% 0% 0% 0% 0% 0%
Wed, 02 Apr 0% 0% 0% 0% 0% 0%
Thu, 03 Apr 1% 0% 1% 0% 0% 0%
Fri, 04 Apr 3% 2% 1% 1% 1%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 18:28. Dusk: 19:02. Dark: 19:42. Moon not visible

Updated: Fri, 28-Mar at 20:38

East England

A cold and clear night.

  • A fine night with long clear spells for much of the region, allowing a cold night with a chance of frost by dawn
  • Light winds
  • Minimum Temperature 2C

Saturday:

  • Sunny for much of Saturday, but sunshine turning hazy through the afternoon with thickening cloud arriving by evening
  • Winds also freshening
  • Milder than Friday night
  • Maximum Temperature 14C

Outlook for Sunday to Tuesday:

  • A settled period with dry conditions and plenty of sunshine expected on Sunday with winds easing
  • Isolated fog patches on Monday and Tuesday morning, clearing to sunshine
  • Temperatures trending upwards

UK Day 6-7 and week 2

  • From the start of April, settled weather is expected to cover much of the UK
  • Most places are expected to be dry with clear or sunny spells and light winds
  • Inland areas will see a general day on day warming next week
  • It will probably remain slightly cooler near coastal areas, with an additional risk of mist or sea fog affecting parts of the east coast
  • There is a chance for more unsettled and perhaps cooler weather for a time in the north and northeast
  • However the main signal is for dry and fine weather across the country during this period
  • Temperatures will likely be around or above normal and feeling warm during the day, and some cold nights are still possible when skies are clear

UK Week 3 and 4

  • Weather patterns are most likely to remain slow moving through the middle of April
  • High pressure will probably be centred to the north of the UK, bringing a lot of fine and dry weather
  • If there are any interludes of rain or showers, particularly later in the month, these are more likely to affect the south of the UK
  • Temperatures are likely to be above average overall, and feeling warm inland with light winds during the day, although some cold nights are still possible under any clear skies

Weather data by Met Office

Hertfordshire Air Quality (Pollen and UV)

Updated: Fri, 28-Mar at 23:36

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   alder birch
Sat, 29 Mar air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q   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 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 air q   alder birch
Sun, 30 Mar air q   alder birch air q   alder birch air q   alder birch air q   alder   air q       air q       air q UV     air q UV     air q UV     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
Mon, 31 Mar air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q   alder birch air q   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 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
Tue, 01 Apr air q   alder birch

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: Fri, 28-Mar at 23:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Sat, 29 Mar 18km 18km 28km 43km 55km 63km 71km 75km 76km 74km 75km 76km 73km 67km 62km 49km
Sun, 30 Mar 12km 34km 42km 48km 57km 64km 65km 71km 74km 75km 76km 75km 73km 70km 62km 55km
Mon, 31 Mar 6km 6km 7km 23km 43km 55km 65km 68km 71km 73km 75km 75km 75km 75km 69km 65km
Tue, 01 Apr 11km 5km 12km 19km 25km 41km 56km 71km 73km 75km 77km 76km 75km 74km 65km 57km
Wed, 02 Apr 27km 29km 40km 50km 61km 66km 71km 76km 76km 76km 76km 76km 76km 76km 24km 24km

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
Fri, 28-Mar 04:30 05:10 05:44 12:05 18:28 19:02 19:42 13:51
Sat, 29-Mar 04:27 05:08 05:42 12:05 18:29 19:03 19:44 13:55
Sun, 30-Mar 05:25 06:06 06:40 13:05 19:31 20:05 20:46 13:59
Mon, 31-Mar 05:22 06:03 06:37 13:05 19:33 20:07 20:48 14:03
Tue, 01-Apr 05:20 06:01 06:35 13:04 19:34 20:09 20:50 14:07
Wed, 02-Apr 05:17 05:59 06:33 13:04 19:36 20:10 20:52 14:11
Thu, 03-Apr 05:15 05:56 06:31 13:04 19:38 20:12 20:54 14:15
Fri, 04-Apr 05:12 05:54 06:28 13:03 19:40 20:14 20:56 14:20
Sat, 05-Apr 05:10 05:52 06:26 13:03 19:41 20:16 20:58 14:24
Sun, 06-Apr 05:07 05:49 06:24 13:03 19:43 20:18 21:00 14:28
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

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
Fri, 28-Mar 18:28 19:02 05:08 05:42 0 %
Sat, 29-Mar 18:29 19:03 06:06 06:40 0 % 12:06
Sun, 30-Mar 19:31 20:05 dusk 21:29 06:03 06:37 3 % 13:58
Mon, 31-Mar 19:33 20:07 dusk 23:05 06:01 06:35 9 % 14:54
Tue, 01-Apr 19:34 20:09 dusk 00:39 05:59 06:33 17 % 15:52
Wed, 02-Apr 19:36 20:10 dusk 02:05 05:56 06:31 27 % 16:53
Thu, 03-Apr 19:38 20:12 dusk 03:14 05:54 06:28 38 % 17:56
Fri, 04-Apr 19:40 20:14 dusk 04:02 05:52 06:26 49 % 18:56
Sat, 05-Apr 19:41 20:16 dusk 04:34 05:49 06:24 59 % 19:53
Sun, 06-Apr 19:43 20:18 dusk 04:55 05:47 06:22 69 % 20:46
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

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.