London weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: May – September
What is the weather like in London in August?
In August, London is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 63 mm in total. All in all, August is a good month for a holiday in London.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 80 | 77 | 77 |
| Day | 22° | 22° | 19° |
| Night | 14° | 14° | 11° |
| Sun | 7 h | 6 h | 5 h |
| Rain days | 10 | 10 | 9 |
More details for August
- Daylight
- 14 h 41 min05:45 – 20:26
- UV index
- 6 · highclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 65 %on average
- Hot days
- 1 day30 °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 %100 %
- Sunshineweight 20 %50 %
- Few rainy daysweight 30 %56 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
London in August: quick answers
Is London hot in August?
Warm rather than hot: in August, daytime highs in London average 22 °C and nights cool to about 14 °C.
Does it rain much in London in August?
Rain is frequent, with about 10 rainy days and 63 mm in total.
London month by month
The whole year in LondonAll destinations: United Kingdom
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)