Chelsea and Battersea Park walk

Met Office Forecast

South East England

Dry, fine and pleasantly warm. Fog patches possible overnight.

Today:

A cold start and a little misty along the coast, but becoming dry and bright with sunny spells and light winds. Sunshine then turning increasingly hazy through the afternoon, but still feeling pleasantly warm. Maximum Temperature 18C.

Tonight:

Dry with clear spells developing overnight and a patchy frost possible. A few mist patches may also form through the early hours along with some coastal fog and low cloud. Minimum Temperature -1C.

Tuesday:

A chilly start, but any mist fog and low cloud soon clearing toward the coast. Spells of often hazy sunshine expected, but feeling warm Cloud and some rain overnight. Maximum Temperature 18C.

Outlook for Wednesday to Friday:

Cloudy with scattered showers Wednesday, drier and brighter later but frosty overnight. Fine and dry through Thursday and Friday with long spells of warm sunshine. Overnight frosts persisting.

Day 6-7 and Week 2:

Generally fine and dry on Friday, with sunny spells and patchy fair-weather cloud. Some showers possible for the far northeast, accompanied by gusty winds; these winds are also expected for the far southwest where gale force gusts could be seen in exposed areas. For most of April, high pressure is expected to dominate, meaning most places will be dry and bright, with some morning fog patches in places where winds are light. After a dip in daytime temperatures at the start of the period, it will probably warm slightly by day, although overnight frosts remain probable in rural areas. The greatest potential for rain and stronger winds across the south and southwest, although confidence decreases into the beginning of May.

Week 3 and 4:

Mixed weather patterns, typical of spring are most likely through the first half of May. Overall, fine and dry weather is expected to be most dominant, with fair-weather cloud and plenty of sunny spells. However, all areas are likely to see some showers or perhaps some longer spells of rain at times, with these unsettled periods more likely than they were in April. Temperatures are likely to be close to the average for the time of year, with the possibility of some warmer spells.

Met Office : South East England : 2021-04-19T01:39:57

Daylight : London

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 : London

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!