When planning a visit to Ontario in Canada, it helps to know that temperatures typically range from 0°C (32°F) in January up to 26°C (79°F) during the peak of July. Our detailed climate overview is based on data from Toronto, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
The weather in Ontario during June, July, August and September is comfortably warm, with average temperatures ranging from 22°C (72°F) to 26°C (79°F).
The coldest months generally fall in January, February, March, April, November and December.
When it comes to rainfall, Ontario maintains fairly consistent rainfall patterns throughout the year, with April seeing 95 mm (3.7 in) and August receiving 67 mm (2.6 in).
For those seeking sunshine, July usually has the brightest skies, making it an excellent time for exploring the region.
