Amberley to Pulborough walk

Met Office Forecast

South East England

Mild, wet and windy today. Turning colder tomorrow.

Today:

A mild day in store with outbreaks of rain and drizzle, perhaps heavy at times. Occasional drier spells are possible, but it will remain mostly cloudy and windy, with gales along English Channel coasts. Mild for all parts. Maximum Temperature 12C.

Tonight:

Further periods of heavy rain are likely overnight with mild southwesterly winds replaced by much colder northwesterly winds later. Becoming drier with clear spells by dawn. Minimum Temperature 4C.

Thursday:

A cold, bright and blustery day with plenty of sunny spells, but also a few showers. Feeling colder than recent days, especially in the wind. Maximum Temperature 8C.

Outlook for Friday to Sunday:

Cold and dry on Friday with largely sunny skies and winds steadily easing. Potential for a spell of rain and snow on Saturday, then drier again Sunday. Widespread frost overnight.

Day 6-7 and Week 2:

At the start of this period it will remain unsettled with north-westerly winds likely, bringing frequent showers and outbreaks of rain, particularly to the north and west. Likely falling as snow over high ground and at times to lower levels. Windy, especially in the north. Into this period unsettled conditions look most likely with low pressure dominant across the UK, bringing changeable weather with periods of rain, showers and strong winds at times. Northerly winds are expected at times, which increases the risk of snowfall especially in the north but may bring wintry hazards further south. In the south milder interludes may occur at times bringing at or above average temperatures. Overall temperatures are likely to be rather cold in the north but close to average in the south.

Week 3 and 4:

Confidence for this period is low, though low pressure is likely to be dominant at first with an increased chance of northerly winds. This will therefore increase the risk of snowfall especially in the north along with colder than average temperatures. Potentially bringing wintry hazards more widely. Through mid-February higher pressure may develop for a time which would bring drier conditions with an increased likelihood of fog and cold nights.

Met Office : South East England : 2021-01-20T01:07:06

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!