Watton-at-Stone Circular Walk

The rolling hills of Hertfordshire, the River Beane, and Watton.

Hiking weather forecast

Hertfordshire hourly weather (Visual Crossing)

Sunset: 16:14. Dusk: 16:53. Dark: 17:36. Moon 95% (dusk to dawn)

Updated: Sat, 11-Jan at 11:39

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%
Sun, 12 Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Mon, 13 Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Tue, 14 Jan 3% 3% 3% 3% 3% 3% 3% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Wed, 15 Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Thu, 16 Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Fri, 17 Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sat, 18 Jan 3% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sun, 19 Jan 7% 7% 7% 7% 7% 7% 7% 13% 13% 13% 13% 13% 13% 10% 10% 10%
Mon, 20 Jan 7% 10% 10% 10% 10% 10% 10% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Tue, 21 Jan 10% 16% 16% 16% 16% 16% 16% 19% 19% 19% 19% 19% 19% 7% 7% 7%
Wed, 22 Jan 7% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 13% 13% 13%
Thu, 23 Jan 13% 13% 13% 13% 13% 13% 13% 16% 16% 16% 16% 16% 16% 10% 10% 10%
Fri, 24 Jan 7% 16% 16% 16% 16% 16% 16% 13% 13% 13% 13% 13% 13% 13% 13% 13%
Sat, 25 Jan 10% 19% 19% 19% 19% 19% 19% 23% 23% 23% 23% 23% 23% 13% 13% 13%

Percentages are the chance of rain.

Weather data by Visual Crossing

Hertfordshire hourly weather (Open Meteo)

Sunset: 16:14. Dusk: 16:53. Dark: 17:36. Moon 95% (dusk to dawn)

Updated: Sat, 11-Jan at 11:36

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% 🌫 3% 🌫 3%
Sun, 12 Jan 🌫 0% 🌫 0% 🌫 0% 🌫 0% 🌫 0% 🌫 0% 🌫 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Mon, 13 Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Tue, 14 Jan 3% 3% 2% 2% 1% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Wed, 15 Jan 🌫 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Thu, 16 Jan 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Fri, 17 Jan 0% 0% 0% 0% 0% 0% 0% 0% 1% 1% 2% 2% 3% 4% 4% 5%
Sat, 18 Jan 17% 19% 20% 22% 23% 24% 25% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sun, 19 Jan 6% 7% 6% 6% 5% 3% 3% 5% 8% 10% 11% 11% 10% 9% 7% 6%
Mon, 20 Jan 10% 9% 7% 6% 6% 6% 6% 5% 4% 3% 3% 3% 3% 2% 1% 0%
Tue, 21 Jan 10% 11% 13% 14% 15% 15% 16% 16% 17% 17% 17% 17% 16% 15% 13% 11%
Wed, 22 Jan 6% 7% 7% 8% 9% 10% 10% 10% 9% 8% 7% 6% 6% 6% 7% 8%
Thu, 23 Jan 13% 13% 13% 13% 13% 13% 13% 14% 14% 15% 16% 16% 16% 15% 14% 13%
Fri, 24 Jan 6% 7% 9% 11% 13% 15% 16% 16% 14% 13% 12% 11% 10% 10% 10% 11%
Sat, 25 Jan 10% 10% 11% 12% 13% 15% 16% 18% 20% 21% 22% 23% 23% 22% 20% 18%
Sun, 26 Jan 26% 27% 28% 28% 28% 27% 26% 24% 22% 20% 18% 15% 13% 12% 11% 11%

Percentages are the chance of rain.

Weather data by Open-Meteo

Hertfordshire hourly weather (Met Office)

Sunset: 16:14. Dusk: 16:53. Dark: 17:36. Moon 95% (dusk to dawn)

Updated: Sat, 11-Jan at 10:00

06 09 12 15 18 21
Today 2% 0% 15% 7%
Sun, 12 Jan 🌫 16% 2% 5% 5% 11% 8%
Mon, 13 Jan 9% 9% 5% 5% 5% 5%
Tue, 14 Jan 9% 7% 10% 9% 11% 7%
Wed, 15 Jan 🌫 16% 🌫 16% 10% 6% 5% 4%
Thu, 16 Jan 10% 🌫 15% 9% 5% 6% 3%
Fri, 17 Jan 10% 11% 6% 8% 3% 8%
Sat, 18 Jan 🌫 18% 🌫 18%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 16:14. Dusk: 16:53. Dark: 17:36. Moon 95% (dusk to dawn)

Updated: Sat, 11-Jan at 11:38

East England

Cold with sunny periods, although some freezing fog may linger.

  • Apart for possibly a few light wintry showers along the coast it will be another fine and cold day with sunny periods, although patchy freezing fog may persist in some areas
  • Temperatures will quickly fall this evening
  • Maximum Temperature 4C

Tonight:

  • Staying largely clear with a widespread severe frost, and a risk of freezing fog becoming more widespread
  • However, cloudier conditions may just reach western areas through the night
  • Minimum Temperature -6C

Sunday:

  • Dry with varying amounts of cloud but also some bright or sunny spells, with any patchy freezing fog gradually clearing
  • Staying cold again
  • Maximum Temperature 3C

Outlook for Monday to Wednesday:

  • Cold Monday by day, with bright or sunny spells, and frosty again overnight
  • Thereafter temperatures gradually rise, reaching average values for Wednesday
  • Also becoming largely cloudy and mainly dry

UK Day 6-7 and week 2

  • High pressure is likely to lie close to southern UK initially, with generally settled conditions prevailing across the south
  • Cloud amounts will be variable and often large, with some fog developing under clearer spells, especially in the south
  • Frontal systems will spread from the northwest of the UK, bringing some rain and windier conditions here
  • These spreading further south at times with windier conditions and frontal bands of rain making more progress across the whole of the UK from next week with the potential for deeper lows with stronger winds to approach the UK
  • Temperatures are likely to be generally a little above average, falling to around average into next week, though the south or east may see the odd rather cold start under clear skies and lighter winds

UK Week 3 and 4

  • A dominant flow from the Atlantic drives an unsettled, milder and windier than average period
  • This likely leading to bands of rain and periods of stronger winds at times, however the potential for brief cold northerly spells remains following any deep lows crossing the region, though these brief before a milder westerly likely returns

Weather data by Met Office

Hertfordshire Air Quality (Pollen and UV)

Updated: Sat, 11-Jan at 11:36

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 UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q   air q  
Sun, 12 Jan air q   air q   air q   air q   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   air q   air q   air q   air q   air q   air q   air q  
Mon, 13 Jan air q   air q   air q   air q   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   air q   air q   air q   air q   air q   air q   air q  
Tue, 14 Jan air q   air q   air q   air q   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   air q   air q   air q   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: Sat, 11-Jan at 11:36

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 3km 12km 19km 21km 20km 18km 11km 3km 0km 0km 0km
Sun, 12 Jan 0km 0km 0km 0km 0km 0km 2km 7km 13km 17km 20km 24km 21km 19km 17km 16km
Mon, 13 Jan 7km 5km 4km 4km 8km 9km 14km 18km 17km 17km 15km 17km 16km 14km 12km 12km
Tue, 14 Jan 13km 14km 13km 15km 18km 21km 26km 28km 30km 32km 27km 22km 16km 14km 11km 8km
Wed, 15 Jan 2km 4km 6km 8km 16km 23km 31km 35km 38km 42km 39km 35km 32km 29km 26km 23km

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
Sat, 11-Jan 06:42 07:24 08:04 12:08 16:14 16:53 17:36 09:28
Sun, 12-Jan 06:41 07:24 08:03 12:09 16:15 16:54 17:37 09:30
Mon, 13-Jan 06:41 07:23 08:02 12:09 16:17 16:56 17:38 09:32
Tue, 14-Jan 06:40 07:22 08:01 12:10 16:18 16:57 17:39 09:34
Wed, 15-Jan 06:40 07:22 08:01 12:10 16:20 16:59 17:41 09:36
Thu, 16-Jan 06:39 07:21 08:00 12:10 16:21 17:00 17:42 09:39
Fri, 17-Jan 06:38 07:20 07:59 12:11 16:23 17:02 17:44 09:41
Sat, 18-Jan 06:37 07:19 07:58 12:11 16:25 17:03 17:45 09:43
Sun, 19-Jan 06:37 07:18 07:57 12:11 16:26 17:05 17:46 09:46
Mon, 20-Jan 06:36 07:17 07:56 12:12 16:28 17:06 17:48 09:48
Tue, 21-Jan 06:35 07:16 07:54 12:12 16:30 17:08 17:49 09:51
Wed, 22-Jan 06:34 07:15 07:53 12:12 16:31 17:09 17:51 09:53
Thu, 23-Jan 06:33 07:14 07:52 12:12 16:33 17:11 17:52 09:56
Fri, 24-Jan 06:32 07:13 07:51 12:13 16:35 17:12 17:54 09:59
Sat, 25-Jan 06:31 07:12 07:50 12:13 16:37 17:14 17:55 10:01
Sun, 26-Jan 06:30 07:11 07:48 12:13 16:38 17:16 17:57 10:04
Mon, 27-Jan 06:29 07:10 07:47 12:13 16:40 17:17 17:58 10:07
Tue, 28-Jan 06:28 07:08 07:45 12:13 16:42 17:19 18:00 10:10
Wed, 29-Jan 06:26 07:07 07:44 12:14 16:44 17:21 18:01 10:13
Thu, 30-Jan 06:25 07:06 07:42 12:14 16:46 17:22 18:03 10:16
Fri, 31-Jan 06:24 07:04 07:41 12:14 16:47 17:24 18:05 10:19
Sat, 01-Feb 06:23 07:03 07:39 12:14 16:49 17:26 18:06 10:22
Sun, 02-Feb 06:21 07:02 07:38 12:14 16:51 17:27 18:08 10:25
Mon, 03-Feb 06:20 07:00 07:36 12:14 16:53 17:29 18:09 10:29
Tue, 04-Feb 06:18 06:59 07:35 12:14 16:55 17:31 18:11 10:32
Wed, 05-Feb 06:17 06:57 07:33 12:14 16:57 17:33 18:13 10:35
Thu, 06-Feb 06:15 06:55 07:31 12:15 16:59 17:34 18:14 10:38
Fri, 07-Feb 06:14 06:54 07:29 12:15 17:00 17:36 18:16 10:42
Sat, 08-Feb 06:12 06:52 07:28 12:15 17:02 17:38 18:18 10:45
Sun, 09-Feb 06:11 06:50 07:26 12:15 17:04 17:40 18:19 10:49
Mon, 10-Feb 06:09 06:49 07:24 12:15 17:06 17:41 18:21 10:52
Tue, 11-Feb 06:08 06:47 07:22 12:15 17:08 17:43 18:23 10:56
Wed, 12-Feb 06:06 06:45 07:20 12:15 17:10 17:45 18:24 10:59
Thu, 13-Feb 06:04 06:44 07:18 12:15 17:12 17:47 18:26 11:03
Fri, 14-Feb 06:02 06:42 07:17 12:15 17:13 17:48 18:28 11:06
Sat, 15-Feb 06:01 06:40 07:15 12:15 17:15 17:50 18:29 11:10
Sun, 16-Feb 05:59 06:38 07:13 12:14 17:17 17:52 18:31 11:13
Mon, 17-Feb 05:57 06:36 07:11 12:14 17:19 17:54 18:33 11:17
Tue, 18-Feb 05:55 06:34 07:09 12:14 17:21 17:55 18:34 11:21
Wed, 19-Feb 05:53 06:32 07:07 12:14 17:23 17:57 18:36 11:24
Thu, 20-Feb 05:51 06:30 07:05 12:14 17:24 17:59 18:38 11:28
Fri, 21-Feb 05:49 06:28 07:03 12:14 17:26 18:01 18:40 11:32
Sat, 22-Feb 05:47 06:26 07:01 12:14 17:28 18:02 18:41 11:35
Sun, 23-Feb 05:45 06:24 06:58 12:14 17:30 18:04 18:43 11:39
Mon, 24-Feb 05:43 06:22 06:56 12:14 17:32 18:06 18:45 11:43
Tue, 25-Feb 05:41 06:20 06:54 12:13 17:34 18:08 18:46 11:47
Wed, 26-Feb 05:39 06:18 06:52 12:13 17:35 18:09 18:48 11:51
Thu, 27-Feb 05:37 06:16 06:50 12:13 17:37 18:11 18:50 11:54
Fri, 28-Feb 05:35 06:14 06:48 12:13 17:39 18:13 18:52 11:58
Sat, 01-Mar 05:33 06:12 06:46 12:13 17:41 18:14 18:53 12:02
Sun, 02-Mar 05:31 06:10 06:43 12:13 17:43 18:16 18:55 12:06
Mon, 03-Mar 05:29 06:08 06:41 12:12 17:44 18:18 18:57 12:10
Tue, 04-Mar 05:27 06:05 06:39 12:12 17:46 18:20 18:59 12:14
Wed, 05-Mar 05:24 06:03 06:37 12:12 17:48 18:21 19:00 12:18
Thu, 06-Mar 05:22 06:01 06:35 12:12 17:50 18:23 19:02 12:22
Fri, 07-Mar 05:20 05:59 06:32 12:11 17:51 18:25 19:04 12:26
Sat, 08-Mar 05:18 05:57 06:30 12:11 17:53 18:27 19:06 12:29
Sun, 09-Mar 05:16 05:54 06:28 12:11 17:55 18:28 19:07 12:33
Mon, 10-Mar 05:13 05:52 06:26 12:11 17:57 18:30 19:09 12:37
Tue, 11-Mar 05:11 05:50 06:23 12:10 17:58 18:32 19:11 12:41
Wed, 12-Mar 05:09 05:48 06:21 12:10 18:00 18:34 19:13 12:45
Thu, 13-Mar 05:06 05:45 06:19 12:10 18:02 18:35 19:15 12:49
Fri, 14-Mar 05:04 05:43 06:17 12:10 18:04 18:37 19:16 12:53
Sat, 15-Mar 05:02 05:41 06:14 12:09 18:05 18:39 19:18 12:57
Sun, 16-Mar 04:59 05:39 06:12 12:09 18:07 18:41 19:20 13:02
Mon, 17-Mar 04:57 05:36 06:10 12:09 18:09 18:42 19:22 13:06
Tue, 18-Mar 04:55 05:34 06:07 12:08 18:11 18:44 19:24 13:10
Wed, 19-Mar 04:52 05:32 06:05 12:08 18:12 18:46 19:25 13:14
Thu, 20-Mar 04:50 05:29 06:03 12:08 18:14 18:48 19:27 13:18
Fri, 21-Mar 04:47 05:27 06:00 12:08 18:16 18:49 19:29 13:22
Sat, 22-Mar 04:45 05:25 05:58 12:07 18:17 18:51 19:31 13:26
Sun, 23-Mar 04:42 05:22 05:56 12:07 18:19 18:53 19:33 13:30
Mon, 24-Mar 04:40 05:20 05:54 12:07 18:21 18:55 19:35 13:34
Tue, 25-Mar 04:37 05:18 05:51 12:06 18:22 18:56 19:37 13:38
Wed, 26-Mar 04:35 05:15 05:49 12:06 18:24 18:58 19:39 13:42
Thu, 27-Mar 04:32 05:13 05:47 12:06 18:26 19:00 19:40 13:46
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

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
Sat, 11-Jan 16:14 16:53 dusk dawn 07:24 08:03 95 % 22:18 all night
Sun, 12-Jan 16:15 16:54 dusk dawn 07:23 08:02 99 % 23:19 all night
Mon, 13-Jan 16:17 16:56 dusk dawn 07:22 08:01 100 % 00:17 all night
Tue, 14-Jan 16:18 16:57 dusk dawn 07:22 08:01 99 % 01:11 all night
Wed, 15-Jan 16:20 16:59 18:04 dawn 07:21 08:00 95 % 02:00 before dawn
Thu, 16-Jan 16:21 17:00 19:23 dawn 07:20 07:59 90 % 02:45 before dawn
Fri, 17-Jan 16:23 17:02 20:38 dawn 07:19 07:58 84 % 03:26 before dawn
Sat, 18-Jan 16:25 17:03 21:50 dawn 07:18 07:57 76 % 04:06 before dawn
Sun, 19-Jan 16:26 17:05 23:01 dawn 07:17 07:56 67 % 04:45
Mon, 20-Jan 16:28 17:06 00:12 dawn 07:16 07:54 58 % 05:25
Tue, 21-Jan 16:30 17:08 01:24 dawn 07:15 07:53 49 % 06:07
Wed, 22-Jan 16:31 17:09 02:38 dawn 07:14 07:52 39 % 06:51
Thu, 23-Jan 16:33 17:11 03:54 dawn 07:13 07:51 30 % 07:39
Fri, 24-Jan 16:35 17:12 05:08 dawn 07:12 07:50 22 % 08:31
Sat, 25-Jan 16:37 17:14 06:15 dawn 07:11 07:48 14 % 09:26
Sun, 26-Jan 16:38 17:16 07:08 dawn 07:10 07:47 8 % 10:24
Mon, 27-Jan 16:40 17:17 07:08 07:45 3 % 11:21
Tue, 28-Jan 16:42 17:19 07:07 07:44 0 %
Wed, 29-Jan 16:44 17:21 07:06 07:42 0 % 12:17
Thu, 30-Jan 16:46 17:22 dusk 18:00 07:04 07:41 3 % 13:11
Fri, 31-Jan 16:47 17:24 dusk 19:29 07:03 07:39 8 % 14:01
Sat, 01-Feb 16:49 17:26 dusk 20:56 07:02 07:38 15 % 14:50
Sun, 02-Feb 16:51 17:27 dusk 22:23 07:00 07:36 25 % 15:38
Mon, 03-Feb 16:53 17:29 dusk 23:50 06:59 07:35 35 % 16:28
Tue, 04-Feb 16:55 17:31 dusk 01:19 06:57 07:33 46 % 17:19
Wed, 05-Feb 16:57 17:33 dusk 02:49 06:55 07:31 58 % 18:13
Thu, 06-Feb 16:59 17:34 dusk 04:13 06:54 07:29 68 % 19:10
Fri, 07-Feb 17:00 17:36 dusk 05:26 06:52 07:28 78 % 20:09 after dusk
Sat, 08-Feb 17:02 17:38 dusk 06:20 06:50 07:26 86 % 21:09 after dusk
Sun, 09-Feb 17:04 17:40 dusk dawn 06:49 07:24 93 % 22:07 all night
Mon, 10-Feb 17:06 17:41 dusk dawn 06:47 07:22 97 % 23:02 all night
Tue, 11-Feb 17:08 17:43 dusk dawn 06:45 07:20 100 % 23:52 all night
Wed, 12-Feb 17:10 17:45 dusk dawn 06:44 07:18 100 % 00:38 all night
Thu, 13-Feb 17:12 17:47 18:19 dawn 06:42 07:17 98 % 01:21 before dawn
Fri, 14-Feb 17:13 17:48 19:33 dawn 06:40 07:15 94 % 02:02 before dawn
Sat, 15-Feb 17:15 17:50 20:44 dawn 06:38 07:13 89 % 02:41 before dawn
Sun, 16-Feb 17:17 17:52 21:55 dawn 06:36 07:11 83 % 03:21 before dawn
Mon, 17-Feb 17:19 17:54 23:07 dawn 06:34 07:09 75 % 04:01
Tue, 18-Feb 17:21 17:55 00:20 dawn 06:32 07:07 66 % 04:44
Wed, 19-Feb 17:23 17:57 01:35 dawn 06:30 07:05 57 % 05:30
Thu, 20-Feb 17:24 17:59 02:49 dawn 06:28 07:03 48 % 06:20
Fri, 21-Feb 17:26 18:01 03:59 dawn 06:26 07:01 38 % 07:13
Sat, 22-Feb 17:28 18:02 04:58 dawn 06:24 06:58 28 % 08:08
Sun, 23-Feb 17:30 18:04 05:43 dawn 06:22 06:56 20 % 09:05
Mon, 24-Feb 17:32 18:06 06:15 dawn 06:20 06:54 12 % 10:02
Tue, 25-Feb 17:34 18:08 06:18 06:52 6 % 10:56
Wed, 26-Feb 17:35 18:09 06:16 06:50 2 % 11:49
Thu, 27-Feb 17:37 18:11 06:14 06:48 0 %
Fri, 28-Feb 17:39 18:13 dusk 18:28 06:12 06:46 1 % 12:40
Sat, 01-Mar 17:41 18:14 dusk 19:58 06:10 06:43 6 % 13:30
Sun, 02-Mar 17:43 18:16 dusk 21:29 06:08 06:41 12 % 14:20
Mon, 03-Mar 17:44 18:18 dusk 23:01 06:05 06:39 21 % 15:12
Tue, 04-Mar 17:46 18:20 dusk 00:33 06:03 06:37 31 % 16:07
Wed, 05-Mar 17:48 18:21 dusk 02:02 06:01 06:35 42 % 17:04
Thu, 06-Mar 17:50 18:23 dusk 03:19 05:59 06:32 54 % 18:04
Fri, 07-Mar 17:51 18:25 dusk 04:19 05:57 06:30 64 % 19:04
Sat, 08-Mar 17:53 18:27 dusk 05:01 05:54 06:28 74 % 20:02
Sun, 09-Mar 17:55 18:28 dusk 05:29 05:52 06:26 83 % 20:58 after dusk
Mon, 10-Mar 17:57 18:30 dusk 05:48 05:50 06:23 90 % 21:48 after dusk
Tue, 11-Mar 17:58 18:32 dusk dawn 05:48 06:21 95 % 22:35 all night
Wed, 12-Mar 18:00 18:34 dusk dawn 05:45 06:19 98 % 23:18 all night
Thu, 13-Mar 18:02 18:35 dusk dawn 05:43 06:17 100 % 23:59 all night
Fri, 14-Mar 18:04 18:37 dusk dawn 05:41 06:14 100 % 00:39 all night
Sat, 15-Mar 18:05 18:39 19:41 dawn 05:39 06:12 97 % 01:18 before dawn
Sun, 16-Mar 18:07 18:41 20:53 dawn 05:36 06:10 93 % 01:58 before dawn
Mon, 17-Mar 18:09 18:42 22:05 dawn 05:34 06:07 88 % 02:40 before dawn
Tue, 18-Mar 18:11 18:44 23:20 dawn 05:32 06:05 81 % 03:25 before dawn
Wed, 19-Mar 18:12 18:46 00:34 dawn 05:29 06:03 73 % 04:12
Thu, 20-Mar 18:14 18:48 01:45 dawn 05:27 06:00 64 % 05:03
Fri, 21-Mar 18:16 18:49 02:48 dawn 05:25 05:58 55 % 05:57
Sat, 22-Mar 18:17 18:51 03:37 dawn 05:22 05:56 45 % 06:52
Sun, 23-Mar 18:19 18:53 04:14 dawn 05:20 05:54 35 % 07:47
Mon, 24-Mar 18:21 18:55 04:40 dawn 05:18 05:51 25 % 08:41
Tue, 25-Mar 18:22 18:56 04:59 dawn 05:15 05:49 16 % 09:34
Wed, 26-Mar 18:24 18:58 05:13 05:47 9 % 10:25
Thu, 27-Mar 18:26 19:00 05:10 05:44 3 % 11:15
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

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.