Weatheo

London Weather by Month

Average temperatures, rainfall and humidity for London, Canada, month by month, built from OpenWeather’s historical records. Use it to see what a typical London month looks like before you travel — then check the live London forecast for the days ahead.

Warmest month

July

27°C average high

Coolest month

February

-8°C average low

Wettest month

April

57 mm of rain

Driest month

February

10 mm of rain

Average temperature and rainfall in London by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January-1°C-8°C-25°C / 13°C
23 mm
81%15 km/h
February0°C-8°C-30°C / 18°C
10 mm
78%15 km/h
March6°C-3°C-24°C / 22°C
25 mm
74%15 km/h
April13°C2°C-13°C / 27°C
57 mm
70%15 km/h
May20°C9°C-2°C / 31°C
34 mm
69%12 km/h
June25°C14°C3°C / 35°C
35 mm
69%11 km/h
July27°C17°C8°C / 36°C
29 mm
73%10 km/h
August26°C16°C6°C / 37°C
39 mm
75%9 km/h
September23°C13°C2°C / 39°C
35 mm
77%10 km/h
October16°C7°C-5°C / 29°C
42 mm
77%12 km/h
November8°C0°C-13°C / 23°C
27 mm
77%14 km/h
December2°C-3°C-25°C / 15°C
27 mm
81%14 km/h

Best time to visit London

The most comfortable time to visit London is generally June and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around April, totalling about 384 mm a year.

Travellers who prefer heat should aim for July, when highs average 27°C. April is the month to avoid if rain would spoil your plans — it averages 57 mm, roughly 6× the rainfall of the driest month (February).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the London forecast for what is happening now.

Weather across Canada right now