London (ON) Weather & Climate: Best Time to Visit
London, Ontario, Canada, experiences significant temperature variation throughout the year. Summers bring daytime highs of 27°C (81°F) in July, while winters cool to 0°C (32°F) in January.
The city receives considerable rain/snowfall, with around 1073 mm (42 in) annually. June is the wettest month.
Monthly Temperature in London
Depending on the time of the year, temperatures range from comfortable to very cold in London. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold 0°C (32°F) in the coolest month, January.
Nights vary from 16°C (61°F) in July to around -9°C (16°F) during the colder months.Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in London
London has a relatively rain/snowy climate with high precipitation levels, averaging 1073 mm (42 in) of rain/snowfall annually. Precipitation levels in London remain relatively steady throughout the year. June has the most rain, with 110 mm (4.3 in) over 11 days. In the driest month February, this drops slightly to 71 mm (2.8 in), making the city's climate fairly predictable. For more details, please visit our London Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
London (ON) 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit London
During the months of May, June, July, August and September, London enjoys pleasant weather with average temperatures ranging from 20°C (69°F) to 27°C (81°F). These months are perfect for sightseeing and exploring.Rainfall during this time ranges from 89 mm (3.5 in) in August to 110 mm (4.3 in) in June. This means you can expect a mix of sunny days and occasional showers. Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
