Amberley to Pulborough walk

Met Office Forecast

South East England

Cloudy with outbreaks of rain, heavy and thundery in places.

This Evening and Tonight:

Cloudy with showery outbreaks of rain this evening and overnight. These may be heavy and thundery at times, and are likely to become more widespread towards the end of the night. Minimum Temperature 12C.

Wednesday:

Outbreaks of locally heavy and thundery rain at first. Otherwise mostly cloudy with further showery rain spreading east, but drier and brighter in the west later. Maximum Temperature 22C.

Outlook for Thursday to Saturday:

Broken cloud will produce sunny intervals and occasional showers on Thursday. Dry Friday and Saturday with mostly light winds and warm sunny spells, but cooler and breezier near the coast.

Day 6-7 and Week 2:

On Sunday most places will start fine, bright, and dry and remain so through much of the day, especially in northern and eastern parts. Temperatures will recover to normal or be locally warm. However, for southwestern and western parts heavy rain and some strong winds should arrive during the day as low pressure moves towards the UK from the southwest. Rain is likely to spread northward and eastwards into Monday bringing unsettled weather more widely for the start of the next week. As we head into late June there are signs that high pressure may become more dominant, bringing a chance of settled and warm weather with temperatures mostly near normal. However, by early July we may see a return to greater influence from Atlantic again, although confidence is low.

Week 3 and 4:

During the first half of July predictability becomes very low, with mixed signals. However, at present the favored solution is for increased Atlantic mobility through this period, bringing spells of unsettled weather to the UK, generally associated with low pressure systems, interspersed by more settled anticyclonic regimes. This will likely mean that showers or longer spells of rain will affect northwestern parts of the UK, whilst the south and southeast will see more in the way of dry weather: although some thundery outbreaks are likely in the south and southeast as is usual this time of year. Temperatures through the period will probably near or slightly above average.

Met Office : South East England : 2019-06-18T13:46:11

Daylight : West Sussex

Data: US Navy Observatory

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, and, (ii) if there are hills on the horizon.
• Of course, you need a cloudless night as well!
• Data: US Navy Observatory