Experience the charm of London's mild and often drizzly climate, with an average annual rainfall of 590mm. The best time to visit is from May to September when temperatures range between a refreshing 15°C (59°F) and a pleasant 22°C (72°F). Did you know London receives more sunshine hours in winter than New York City? Embrace this fact by strolling along the River Thames during a sunset, capturing iconic cityscapes against the backdrop of a setting sun.
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London Climate & Weather Averages
London is warmest in July, when daytime highs average 73°F, and coldest in January at around 46°F. The wettest month is October. The table below shows the monthly averages for London, based on recorded data from 2015–2024.
London enjoys a temperate climate without harsh extremes: summers are pleasant (73°F average highs in July), winters cool but manageable (46°F in January), and rain is a year-round companion that peaks in October. Snow does visit — about 7 days a year — but rarely settles in for long.
| Month | Avg High | Avg Low | Rainfall | Sunshine (h/day) | Wind (mph) | Snow days |
|---|---|---|---|---|---|---|
| Jan | 46° | 35° | 2.4 in | 4.3 | 14 | 2 |
| Feb | 49° | 37° | 2.1 in | 5.2 | 16 | 1 |
| Mar | 52° | 39° | 2.3 in | 6.5 | 15 | 1 |
| Apr | 57° | 41° | 1.6 in | 9.5 | 13 | — |
| May | 63° | 47° | 2.3 in | 10.6 | 13 | — |
| Jun | 70° | 53° | 2.4 in | 11.2 | 12 | — |
| Jul | 73° | 57° | 2.4 in | 11.2 | 13 | — |
| Aug | 72° | 57° | 2.2 in | 10 | 13 | — |
| Sep | 67° | 53° | 2.5 in | 8.4 | 12 | — |
| Oct | 60° | 48° | 3 in | 6.3 | 14 | — |
| Nov | 52° | 42° | 2.6 in | 4.4 | 14 | — |
| Dec | 49° | 40° | 2.6 in | 3.3 | 14 | 1 |
A warming climate: London's warmest month (July) has warmed from an average high of 70°F in the 1950s to 73°F today — a shift of +2.4°F over roughly seventy years.
Sunshine is most generous in June, averaging about 11.2 hours a day, and thinnest in December at roughly 3.3 hours. The breeziest stretch of the year comes around February, when daily winds typically peak near 16 mph.
Best time to visit: June–August offers the most comfortable conditions, with daytime highs around 72°F. Light, breathable layers plus a light waterproof cover most days here. For the coldest spell around January, bring warmer layers.
London weather — frequently asked questions
What is the rainiest month in London?
October is on average the wettest month in London, with about 3 in of rainfall. The driest month is typically April, at around 1.6 in.
Does it snow in London?
Yes. London averages about 7 days with snowfall per year, falling mostly between December and March.
What is the sunniest month in London?
June, with roughly 11.2 hours of sunshine a day on average over 2015–2024. The dimmest month is December, at about 3.3 hours.
When is the best time to visit London?
Weather-wise, June–August is the sweet spot in London: average daytime highs around 72°F with less rain than the October peak. Data from 2015–2024.
Source: Open-Meteo ERA5 archive. Averages computed from daily records.