London weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: May – September
What is the weather like in London in May?
In May, London is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 54 mm in total. All in all, May is a good month for a holiday in London.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 15 h 34 min05:10 – 20:43
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 19 km/haverage daily peak
- Cloud cover
- 66 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/London
How the score comes together
- Temperatureweight 50 %87 %
- Sunshineweight 20 %62 %
- Few rainy daysweight 30 %55 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
London in May: quick answers
Is London hot in May?
No. In May, London is mild: daytime highs average 17 °C and nights drop to about 8 °C.
Does it rain much in London in May?
Rain is frequent, with about 10 rainy days and 54 mm in total.
London month by month
The whole year in LondonAll destinations: United KingdomWhere to go in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)