Pulborough to Amberley walk

Met Office Forecast

South East England

Rain and snow clearing to sunny spells and isolated showers.

Today:

Breezy with outbreaks of rain, sleet and snow to start, and some more persistent snow likely for a time this morning in more eastern areas. Drier conditions then spreading east this afternoon, with some sunny spells developing in the west. Maximum Temperature 7C.

Tonight:

A dry night across the region with some clear spells, and becoming chilly by morning with a touch of frost in rural parts. Minimum Temperature 0C.

Sunday:

After a chilly start, a dry day across the region with some sunny spells, but rather breezy across the east Kent coast. Maximum Temperature 7C.

Outlook for Monday to Wednesday:

Increasingly cloudy through Monday, with more general wind and rain in the evening. Tuesday and Wednesday windy with coastal gales and outbreaks of rain, but also some drier interludes.

Day 6-7 and Week 2:

From Thursday onwards rather cold and unsettled conditions look likely for most of the UK, as a low pressure system remains to the northeast. Northwesterly winds from this system are expected to bring frequent showers, particularly to north and west-facing coasts, and this will likely fall as snow over high level areas, and also down to lower levels at times. Atlantic low-pressure systems are expected to cross the south of the country at times, bringing rainfall and periods of slightly milder temperatures, and there will be a risk of snowfall on the boundary between the mild and cold air masses. Northern and central areas are more likely to be affected by wintry hazards during this period.

Week 3 and 4:

Confidence for this period is low, though there is a signal for weaker than average westerly winds and for Atlantic low-pressure systems to track further south than normal. This will bring below-average temperatures to the north of the UK, with a greater than normal risk of wintry precipitation. Further south, there is a continued risk of unsettled conditions, with above-average rainfall and periods of slightly above average temperatures. There remains the potential for significant snowfall along the boundary between colder air to the north and the milder air in the south, with the greatest risk across central and northern areas. Through this period there is a greater than average chance of cold spells spreading across the whole UK at times with the associated risk of wintry hazards.

Met Office : South East England : 2021-01-16T02:01:29

Daylight : West Sussex

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

It should still be light enough to read at dawn and dusk, so there will be enough light for walking even earlier (later).

Moonlight : West Sussex

Notes

• The moon's phase or fracillum (percentage of the moon illuminated) doesn't vary much with location.
• A full moon is not just bigger, its much brighter. A half moon ('50%') give less than 5% of the illumination of a full moon. You can walk with a half 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!