London, England weather in January

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

Average high

45°F

Average low

35°F

Rainy days

~11 per month

Total precipitation

2.7 in

Warmest recorded

59°F

Coldest recorded

23°F

Expect January days in London, England to top out around 45°F and cool to about 35°F overnight, with roughly 11 days of measurable rain across the month. In recent years January has ranged from 23°F to 59°F.