London Weather in May
In May, London averages a high of 17°C (62°F) and a low of 8°C (46°F), from 48 years of daily records (1971–2025).
17°C
Average high
62°F
8°C
Average low
46°F
28°C
Record high
82°F · May 17, 2022
-1°C
Record low
31°F · May 4, 1979
What May Is Like in London
- May 2024 was the warmest May in 48 years of records, 2.7°C (4.9°F) above the long-run average.
- May in London has become 1.8°C (3.3°F) warmer on average: the 2011–2025 average against 1970–1989.
- The coldest May reading, -1°C (31°F) on May 4, 1979, has not been matched in 46 years.
- The warmest May in the record was 2024; the coldest was 1996.
At least 1 mm of rain falls on 29% of May days, and the month averages 56 mm in total.
Warmest: 2022 (20.2°C)Latest: 2024 (20.1°C)10-year averageLong-run average (16.9°C)
Look Up a Day in May
See the weather in London on any May date, year by year.
Source: NOAA GHCN-Daily, Hampstead (1971–2016); Heathrow (1986–2025). Averages cover 1971–2025. How we compute this