Maiden Newton Circular or to Dorchester (via Cerne Abbas) Walk

Dorset hourly weather (Open Meteo)

Sunset: 16:15. Dusk: 16:52. Dark: 17:32. Moon 61% (21:45 to dawn)

Updated: Thu, 21-Nov at 20:36

	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Today															0%	0%
Fri, 22 Nov	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
Sat, 23 Nov	90%	90%	80%	78%	75%	78%	65%	71%	80%	88%	92%	94%	95%	95%	94%	93%
Sun, 24 Nov	73%	71%	70%	70%	75%	76%	78%	80%	83%	87%	90%	92%	93%	93%	92%	90%
Mon, 25 Nov	43%	39%	35%	32%	30%	27%	25%	23%	20%	19%	17%	15%	13%	11%	9%	7%
Tue, 26 Nov	8%	13%	20%	28%	36%	43%	48%	47%	49%	50%	52%	53%	54%	54%	55%	55%
Wed, 27 Nov	35%	31%	28%	24%	22%	19%	18%	17%	17%	18%	19%	21%	22%	24%	26%	27%
Thu, 28 Nov	28%	27%	26%	26%	25%	25%	25%	25%	26%	26%	27%	28%	29%	30%	30%	31%
Fri, 29 Nov	26%	28%	31%	32%	31%	28%	26%	24%	22%	23%	28%	35%	39%	36%	29%	23%
Sat, 30 Nov	16%	18%	20%	23%	26%	30%	32%	31%	29%	26%	20%	14%	10%	12%	16%	19%
Sun, 01 Dec	16%	16%	16%	19%	21%	24%	26%	27%	28%	29%	29%	29%	29%	28%	27%	25%
Mon, 02 Dec	10%	10%	10%	11%	12%	12%	13%	14%	14%	15%	15%	16%	16%	16%	16%	16%
Tue, 03 Dec	13%	14%	15%	17%	19%	21%	23%	25%	26%	27%	28%	29%	29%	28%	27%	26%
Wed, 04 Dec	23%	23%	23%	23%	23%	23%	23%	22%	22%	21%	20%	20%	19%	18%	16%	15%
Thu, 05 Dec	23%	23%	21%	20%	19%	17%	16%	15%	15%	15%	15%	15%	16%	17%	19%	20%
Fri, 06 Dec	23%	23%	23%	23%	23%	23%	23%	22%	22%	21%	20%	19%	19%	19%	20%	21%

Percentages are the chance of rain.

Weather data by Open-Meteo

Dorset hourly weather (Met Office)

Sunset: 16:15. Dusk: 16:52. Dark: 17:32. Moon 61% (21:45 to dawn)

Updated: Thu, 21-Nov at 20:00

	06	09	12	15	18	21
Today						4%
Fri, 22 Nov	4%	3%	1%	4%	0%	3%
Sat, 23 Nov	97%	92%	82%	91%	95%	93%
Sun, 24 Nov	85%	85%	89%	86%	82%	56%
Mon, 25 Nov	11%	4%	29%	7%	3%	2%
Tue, 26 Nov	3%	3%	8%	9%	8%	12%
Wed, 27 Nov	11%	6%	6%	5%	6%	5%
Thu, 28 Nov	7%	6%	6%	7%	8%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 16:15. Dusk: 16:52. Dark: 17:32. Moon 61% (21:45 to dawn)

Updated: Thu, 21-Nov at 20:38

South West England

Cold Friday before Storm Bert arrives this weekend.

• Showers on and off this evening and overnight in the west, bringing sleet and snow in places
• Drier further east with clearer spells
• Breezy for most with a patchy frost and icy stretches possible on untreated surfaces
• Minimum Temperature -2C

Friday:

• Scattered showers fading during the morning, turning mostly dry with bright or sunny spells for many in the afternoon
• Another cold day, though winds easing later
• Maximum Temperature 8C

Outlook for Saturday to Monday:

• Wet and windy on Saturday as Storm Bert brings heavy persistent rain, and snow over the hills
• Rain clearing through Sunday with showers and brighter spells on Monday
• Noticeably milder

UK Day 6-7 and week 2

• An unsettled start, with rain or showers in places, and perhaps also some strong winds for a time
• Temperatures back towards average for most places, but still mild in the southeast
• High pressure is likely to build for a time, particularly across northern areas, bringing an increased risk of some fog and frost
• However, this is likely to migrate eastwards during the second half of next week, potentially allowing some outbreaks of rain to move into some western and perhaps southern areas
• Into December, and while signals are mixed it looks most likely that high pressure may re-assert itself close to or over the UK, with temperatures generally near average, but some overnight frost is likely, and rather cold by day where any fog persists

UK Week 3 and 4

• The start of this period looks like being largely settled, with high pressure close to if not over the UK
• However
• there is also a chance of more changeable weather patterns, which would see Atlantic weather systems periodically move across the country
• These will bring some wetter and windier interludes with a risk of some snow, especially for hills in the north
• These conditions look more likely to dominate towards the middle of December
• Temperatures generally close to average through the period

Weather data by Met Office

Dorset Air Quality (Pollen and UV)

Updated: Thu, 21-Nov at 20:36

Key : Low Medium High Very High

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

Dorset Visibility

Updated: Thu, 21-Nov at 20:36

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

Dorset daylight

Max Height (solar noon) is when the sun is highest in the sky.

Day length is dusk to dawn. Times will vary if there is a hill on the horizon.

After 'Light' (nautical dawn) and before 'Dark' (nautical dusk), the horizon should be visible.

After 'Dawn' (civil dawn) and before 'Dusk' (civil dusk, or lighting up time), there should be enough light to read,

There will be enough light for walking for at least 30 minutes before sunrise and after sunset, even on an overcast day.

Dorset moonlight

Moonlight chart for walking at night.

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
• Of course, you need a cloudless night as well!

Dorset weather (Accuweather)