climate archive

London weather in 2023

In 2023, the average daily high in London was 15.6°C, 1.4° warmer than the 1991-2020 climate normal (14.2°C). 781 mm of rain fell that year, making it wetter than average (649 mm), with 2785 hours of sunshine.

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

Records of 2023

Warmest day: 9 Sep 2023, 31.4°C
Coldest night: 17 Jan 2023, -4.7°C
Wettest day: 20 Sep 2023, 27.3 mm

Day counts for 2023

Frost days (low below 0°C): 35
Ice days (high below 0°C): 1
Warm days (high 25°C or above): 23
Hot days (high 30°C or above): 2

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. 2023 differed by 1.4° in temperature and 132 mm in rainfall.

Frequently asked questions

Was 2023 warmer or cooler than average in London?
2023 was 1.4° warmer than the 1991-2020 climate normal, with an average daily high of 15.6°C compared to a normal of 14.2°C.

How much rain fell in London in 2023?
London recorded 781 mm of rain in total in 2023, compared to a climate normal of 649 mm.

What was the warmest day of 2023 in London?
The warmest day of 2023 was 9 Sep 2023, reaching 31.4°C in London.

Other years