Greater London weather in May 2025

Expect 17°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Greater London in May. Check more long-term weather averages for Greater London in May before you book your next holiday to Greater London in 2025/2026.

  • 17°C maximum daytime temperature in May in Greater London (London)17
    17°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in May in Greater London (London)13
    13 days with some rainfall
  • 8°C minimum night-time temperature in May in Greater London (London)8
    8°C min night temperature
  • 16 hours of daylight per day in May in Greater London (London)16
    16 hours of daylight per day
  • No heat & humidity in May in Greater London (London)0
    No heat & humidity
  • 51 mm monthly rainfall in May in Greater London (London)51
    51 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Greater London (London)5
    5 (Moderate) UV index

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The May weather guide for Greater London (London) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the UK

How warm is it in Greater London in May?

Daytime temperatures usually reach 17°C in London, Greater London in May, falling to 8°C at night.

How sunny is it in Greater London in May?

There are normally 6 hours of bright sunshine each day in London, Greater London in May - that's 39% of daylight hours.

Does it rain in Greater London in May?

There are usually 13 days with some rain in London, Greater London in May and the average monthly rainfall is 51mm.

Greater London May sunrise & sunset times

Browse the sunrise and sunset times for Greater London in May 2025. Select a month to view Greater London sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:32 19:24
Friday, 16th May 2025 04:07 19:48
Saturday, 31st May 2025 03:50 20:07

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