Amber extreme_heat warning
Following a warm night, a spell of very hot weather will affect England on Thursday. The highest temperatures will be in parts of the east, southeast and the Midlands, where 37 or even 38 Celsius could be reached. This may lead to impacts on transport, infrastructure and health.
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Tomorrow in London looks
sunny, with a high of 94°
and an overnight low of 72°.
Rain is unlikely (1% chance).
Winds top out near 11 mph,
and the UV index reaches 6 (high).
Weather in London is shaped by its oceanic climate - expect mild temperatures year-round with regular rainfall. July afternoons typically reach 73°F (23°C), while January highs hover near 46°F (8°C). Annual precipitation averages 28.4 inches (721 mm) over about 135 rainy days.
London weather: quick facts
Hottest month: July - highs near 73°F (23°C)
Coldest month: January - highs near 46°F (8°C)
Record high: 100°F (38°C) · Record low: 13°F (-10°C) (2015–2024)
Wettest month: October (12 rainy days) · Sunniest: June (11.2 h sun/day)
Climate type:oceanic - mild temperatures year-round with regular rainfall
Snow: about 2 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 73°F (23°C) and overnight lows stay near 57°F (14°C). The coolest month is January, with typical highs of 46°F (8°C) and lows around 35°F (2°C). Based on 2015–2024 weather data, temperatures have reached as high as 100°F (38°C) and dropped as low as 13°F (-10°C).
Rain, sun and snow
October is usually the wettest month. It brings about 3.0 inches (77 mm) of rain over 12 days, while April is the driest. June brings the most sunshine, averaging 11.2 hours of sun a day. Snowfall is rare but not unheard of.
Season by season
Spring (March through May)
Spring in London stays on the cool side of mild, with daytime highs averaging 57°F (14°C) and nights around 42°F (6°C); expect showers on roughly 34 days across the season.
Summer (June through August)
Summer in London is pleasantly warm, with daytime highs averaging 71°F (22°C) and nights around 56°F (13°C); expect showers on roughly 31 days across the season.
Fall (September through November)
Fall in London is crisp but comfortable, with daytime highs averaging 60°F (15°C) and nights around 47°F (9°C); expect showers on roughly 34 days across the season.
Winter (December through February)
Winter in London is brisk and cold, with daytime highs averaging 48°F (9°C) and nights around 37°F (3°C); expect showers on roughly 35 days across the season.
Average temperatures in London by month
Monthly averages for London based on 2015–2024 weather data.
July is the hottest month in London, with average highs of 73°F (23°C) and overnight lows near 57°F (14°C). In the past decade the temperature has peaked at 100°F (38°C).
What is the coldest month in London?
January is the coldest month, with highs averaging 46°F (8°C) and lows around 35°F (2°C). The lowest reading in recent years was 13°F (-10°C).
What is the rainiest month in London?
October is typically the wettest month, averaging 3.0 inches (77 mm) of precipitation across about 12 days. April is usually the driest.
Does it snow in London?
Yes. London averages about 2 days of snowfall a year, concentrated January.
What is the best time to visit London?
The best time to visit London is generally May to October, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 67°F (20°C).
How sunny is London?
London averages 7.6 hours of sunshine per day across the year. June is the sunniest month at about 11.2 hours of sun a day.
Is London humid?
Relative humidity in London averages about 79% over the year, which feels very humid. The most comfortable months tend to fall in the drier part of the year.