Hayes to Knockholt walk

Met Office Forecast

South East England

Brightest in the northwest, although rain gradually spreading from southeast.

Today:

A northwest-southeast split: fine with hazy sunshine in the northwest, but cloudier in the southeast throughout, with sharp showers in coastal districts giving way to more widespread and prolonged spells of rain into the evening. Less windy than of late. Maximum Temperature 10C.

Tonight:

Damp conditions in the southeast should spread erratically north and west to most parts overnight, with the northwest perhaps drier but colder, with a slight frost possible here. Minimum Temperature 1C.

Tuesday:

Rather cold generally with mostly light rain, with eastern areas most likely to see some heavier spells. Perhaps brighter in the west later, but showery in coastal districts. Maximum Temperature 8C.

Outlook for Wednesday to Friday:

Wednesday starting fine and frosty with some fog. Turning progressively milder but windier ahead of late rain. Remaining unsettled Thursday, ahead of a wet and very windy Friday with gales.

Day 6-7 and Week 2:

There should be plenty of sunshine around on Friday with temperatures expected to remain above average. However, some coastal showers can be expected before winds increase from the south, accompanied by a spell of rain. Thereafter, it will turn milder and unsettled again as further bands of rain and strong winds edge in from the west. Changeable and sometimes windy conditions will probably last for the rest of the period. Most of the rain will probably be in the west with drier spells more likely in the east and southeast. Snow may occur at times in the north, mainly on high ground. There remains a chance of brief drier, colder interludes, with an increased risk of frost and fog.

Week 3 and 4:

Confidence is low throughout this period. Changeable and sometimes windy conditions seem more likely through late December, with the wetter weather in the west and longer drier spells in the east. By the time we go into January, longer spells of more widely dry, quiet and bright weather are possible, especially for southern and central areas, with the northwest more likely to remain unsettled. Temperatures should be near to or somewhat above average overall, but with the usual day to day variations. However in quieter spells, it is likely to be colder generally, with an increased risk of frost and fog.

Met Office : South East England : 2019-12-16T01:19:45

Daylight : Kent

Data: US Navy Observatory

Moonlight : Kent

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