London weather forecast
UK towns · Greater London, England · 51.51°N 0.13°W
London, in Greater London, England, has its warmest weather in August, when daytime temperatures average 22.8°C, while January nights are the coldest at around 2°C. The town sees roughly 779mm of rain a year; October is normally the wettest month and April the driest. Figures are averaged from 2020–2024 observations.
Climate averages
| Month | Avg high | Avg low | Rain | Rain days |
|---|---|---|---|---|
| Jan | 7.9° | 2° | 64mm | 11 |
| Feb | 10.1° | 3.6° | 65mm | 13 |
| Mar | 11.4° | 4° | 61mm | 14 |
| Apr | 13.9° | 4.8° | 41mm | 9 |
| May | 17.6° | 8.4° | 58mm | 11 |
| Jun | 21.2° | 11.6° | 61mm | 11 |
| Jul | 22.5° | 13.7° | 65mm | 11 |
| Aug | 22.8° | 14.1° | 49mm | 8 |
| Sep | 20.5° | 12.1° | 70mm | 11 |
| Oct | 16° | 9.2° | 107mm | 16 |
| Nov | 11.4° | 5.6° | 71mm | 11 |
| Dec | 8.8° | 4.1° | 67mm | 12 |
Seasons in London
Spring (March–May). Daytime highs in London climb from 11.4°C in March to 17.6°C by May, while nights ease from 4°C to 8.4°C. The season brings around 160mm of rain in total.
Summer (June–August). The warmest stretch of the year: afternoons average 22.2°C, peaking in August at 22.8°C. August is usually the driest of the summer months (49mm over ~8 rainy days). Around the June solstice, London gets roughly 16.4 hours of daylight.
Autumn (September–November). Daytime temperatures fall from 20.5°C in September to 11.4°C by November, and rainfall builds to its annual peak — October is the wettest month of the year (107mm).
Winter (December–February). Nights average 3.2°C, with January the coldest month (average low 2°C, daytime high 7.9°C). Expect about 36 days with measurable rain over the three months, and only around 7.6 hours of daylight in mid-December.
How London compares
| London | UK town average | |
|---|---|---|
| Annual rainfall | 779mm | 1054mm |
| Rainy days per year | 138 | 167 |
| Summer daytime high | 22.2°C | 19.7°C |
| Winter night low | 3.2°C | 3.4°C |
London is about 26% drier than the average for the 121 UK towns tracked on this site (1054mm), based on 2020–2024 monthly normals.
London weather FAQs
What is the warmest month in London?
August is typically the warmest month in London, with average daytime highs of 22.8°C. Summer afternoons (June–August) average around 22.2°C.
What is the wettest month in London?
October is usually the wettest month, with around 107mm of rain over roughly 16 rainy days. April is typically the driest (41mm).
How much does it rain in London per year?
London receives roughly 779mm of precipitation per year, spread over about 138 days with at least 1mm of rain (based on 2020–2024 observations).
How cold are winters in London?
Winter nights (December–February) in London average around 3.2°C, with January typically the coldest month (average low 2°C).
When is the best time to visit London for good weather?
Late spring and summer offer the most reliable weather in London. August is typically the driest of the warm months (49mm of rain), while August is the warmest, averaging 22.8°C by day — and near the June solstice there are around 16 hours of daylight to enjoy.
How does London's weather compare with the rest of the UK?
London receives 779mm of rain a year, about 26% drier than the average for the 121 UK towns tracked on this site (1054mm). Summer daytime highs average 22.2°C against a UK-town average of 19.7°C, and winter nights average 3.2°C versus 3.4°C.
Is it going to rain in London?
For up-to-the-minute rain tracking, check the live rain radar — as a long-term guide, London averages 138 rainy days a year, with October the wettest month (107mm) and April the driest (41mm).
What is the 7-day forecast for London?
See the live hourly and 7-day forecast for day-by-day temperatures and rain chance. The figures on this page are long-term climate averages from 2020–2024, not the live forecast.