Portsmouth Harbour - M275 Motorway Bridge Weather Forecast
- 11
- 11
Cloudy
- 7
- 12
Cloudy
- 10
- 12
Partly cloudy
- 11
- 12
Cloudy
- 10
- 12
Cloudy
- 7
- 11
Cloudy
Today 11 Dec London and South East England
Dry start with bright spells after any early fog patches clear. Turning cloudier into the afternoon, perhaps with a little patchy drizzle in places. Increasingly breezy but mild. Maximum Temperature 11C.
Portsmouth Harbour - M275 Motorway Bridge Temperature Statistics
December Temperature
Thorney Island (11km)
Lowest 5 December, 2025
-1.1 °CAverage December
9.5 °CHighest 7 December, 2025
13.9 °C
Climate (2020–Present)
Thorney Island (11km)
Average Low 2020–2025
8.6 °CAverage 2020–2025
11.9 °CAverage High 2020–2025
15.1 °C