London Weather in May
In May, London averages a high of 17°C (62°F) and a low of 7°C (45°F), based on 56 years of historical weather data from HAMPSTEAD.
17°C
Average high
62°F
7°C
Average low
45°F
33°C
Record high
91°F · 2026
-4°C
Record low
24°F · 2007
What to Expect in London in May
Typical May days in London reach 17°C (62°F) during the afternoon and cool to around 7°C (45°F) overnight. On average, measurable rain falls on about 43% of days this month. Over the past 56 years, May temperatures in London have ranged from a record high of 33°C (2026) down to a record low of -4°C (2007).
For a day-by-day look or other months, see the full London weather history.