7 Day Forecast for Surrey
Moon: 97% (dusk to 05:04)
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Met Office Forecast
South East England
Cloudy and damp at first, then brightening up later.
Cloudy with patchy light rain and drizzle at times, especially during the morning. The cloud may be slow to clear away eastwards into the afternoon, but it should gradually brighten up from the west, with some sunny spells developing. Maximum Temperature 19C.
It will be dry with some clear spells developing overnight. This may allow for some mist, fog and low cloud to form in places by dawn. Light winds. Minimum Temperature 7C.
Early fog and low cloud should soon clear to leave a bright start, with some sunny spells. Cloud and rain will arrive from west during the afternoon, with freshening winds. Maximum Temperature 17C.
Outlook for Thursday to Saturday:
Early rain clearing east on Thursday, becoming drier and brighter. Friday will see rain or showers, and strengthening winds. Heavy rain and strong winds are likely on Saturday.
Day 6-7 and Week 2:
An unsettled period, with plenty of showers and some occasional longer spells of rain across much of the country, the heaviest and most widespread areas likely in the west or northwest, and only limited drier interludes. Often windy, with a risk of gales at times (potentially severe), particularly around coastal regions and within areas of more significant rainfall. With time, northern parts of the UK may tend to become drier and more settled overall, with low pressure systems tending to track further south. Feeling cold, especially so where there is persistent rain and strong winds. Frost is possible at night in any calmer period, becoming increasingly likely for the northern half of the UK later in this period.
Week 3 and 4:
A potential change in the weather is signalled around the middle of October. Whilst further rain and strong winds are likely at times, spells of fine and dry weather could become more widespread and long-lived. At night, these calmer conditions would allow frost and fog to form more readily. At this time of year, there is potential for fog to linger well into the daytime. Overall, temperatures probably recovering close to the seasonal average for mid-October.
Met Office : South East England : 2020-09-29T02:04:47
Daylight : Surrey
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 : Surrey
- 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!