Downside Weather Forecast
- 17
- 21
Heavy rain
- 16
- 23
Cloudy
- 12
- 22
Cloudy
- 13
- 19
Cloudy
- 11
- 19
Light rain
- 14
- 19
Cloudy
- 13
- 20
Cloudy
Today 13 Sep London and South East England
Cloudy, humid and damp, with some rain and drizzle. Drier generally later, but increasing cloud breaks and sunny intervals perhaps sparking a few moderate, and often quite drizzly, showers. Maximum temperature 25 °C.
Downside Temperature Statistics
September Temperature
Heathrow (19km)
Lowest 9 September, 2026
11.5 °CAverage September
18.1 °CHighest 6 September, 2026
27.6 °C
Climate (2021–2026)
Heathrow (19km)
Average Low 2021–2026
8.9 °CAverage 2021–2026
12.7 °CAverage High 2021–2026
16.6 °C