London, England weather in December

Averages from 2021–2025 (155 days of record).

Average high: 48°F
Average low: 40°F
Rainy days: ~11 per month
Total precipitation: 2.5 in
Warmest recorded: 59°F
Coldest recorded: 22°F

Expect December days in London, England to top out around 48°F and cool to about 40°F overnight, with roughly 11 days of measurable rain across the month. In recent years December has ranged from 22°F to 59°F.

Other months

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Current London, England forecast → · Historical data by Open-Meteo (ERA5).