climate archive

London weather in 2025

In 2025, the average daily high in London was 16°C, 1.8° warmer than the 1991-2020 climate normal (14.2°C). 613 mm of rain fell that year, making it drier than average (649 mm), with 2951 hours of sunshine.

Measured in London. Source: Open-Meteo historical data (ERA5 reanalysis).

Records of 2025

Warmest day: 1 Jul 2025, 33.6°C
Coldest night: 12 Jan 2025, -4.5°C
Wettest day: 31 Jul 2025, 26.7 mm

Day counts for 2025

Frost days (low below 0°C): 21
Ice days (high below 0°C): 0
Warm days (high 25°C or above): 39
Hot days (high 30°C or above): 8

Compared with the climate normal (1991-2020)

The climate normal for London over the 1991-2020 reference period is an average daily high of 14.2°C, 649 mm of rain and 2737 hours of sunshine per year. 2025 differed by 1.8° in temperature and 36 mm in rainfall.

Frequently asked questions

Was 2025 warmer or cooler than average in London?
2025 was 1.8° warmer than the 1991-2020 climate normal, with an average daily high of 16°C compared to a normal of 14.2°C.

How much rain fell in London in 2025?
London recorded 613 mm of rain in total in 2025, compared to a climate normal of 649 mm.

What was the warmest day of 2025 in London?
The warmest day of 2025 was 1 Jul 2025, reaching 33.6°C in London.

Other years