Cities in Ontario — climate month by month
Compare 3 cities in Ontario, Canada, across the year.
← Back to Ontario year-round average
Sunny & HotSunny & WarmSunny & MildTropicalSnowy
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Toronto | -4.8°C23.4°F 54 mm2.1″ | -4°C24.8°F 49 mm1.9″ | 0.4°C32.7°F 54 mm2.1″ | 6.8°C44.2°F 72 mm2.8″ | 13.4°C56.1°F 75 mm3″ | 18.5°C65.3°F 72 mm2.8″ | 21.7°C71.1°F 75 mm3″ | 20.9°C69.6°F 80 mm3.1″ | 16.8°C62.2°F 83 mm3.3″ | 10.3°C50.5°F 67 mm2.6″ | 4.6°C40.3°F 78 mm3.1″ | -1.3°C29.7°F 65 mm2.6″ |
| Ottawa | -10.8°C12.6°F 60 mm2.4″ | -9.1°C15.6°F 55 mm2.2″ | -2.8°C27°F 61 mm2.4″ | 5.5°C41.9°F 69 mm2.7″ | 13.2°C55.8°F 82 mm3.2″ | 18.5°C65.3°F 89 mm3.5″ | 21.3°C70.3°F 87 mm3.4″ | 20.2°C68.4°F 88 mm3.5″ | 15.4°C59.7°F 85 mm3.3″ | 8.6°C47.5°F 79 mm3.1″ | 2°C35.6°F 84 mm3.3″ | -6.4°C20.5°F 78 mm3.1″ |
| Hamilton | -4.7°C23.5°F 60 mm2.4″ | -3.9°C25°F 59 mm2.3″ | 0.9°C33.6°F 64 mm2.5″ | 7.2°C45°F 71 mm2.8″ | 13.9°C57°F 77 mm3″ | 19.3°C66.7°F 80 mm3.1″ | 22.4°C72.3°F 84 mm3.3″ | 21.3°C70.3°F 86 mm3.4″ | 17°C62.6°F 94 mm3.7″ | 10.5°C50.9°F 71 mm2.8″ | 4.7°C40.5°F 89 mm3.5″ | -1.3°C29.7°F 73 mm2.9″ |
On mobile, scroll the table horizontally to see all months. Click a city name for its full year-round view.
Frequently asked questions
Which city in Ontario has the least rain?
Toronto is the driest city in Ontario, with approximately 824 mm / 32.4 in of average annual rainfall.
Which city in Ontario is warmest in July?
Hamilton is the warmest city in Ontario in July, with an average temperature of 22.4°C / 72.3°F.
Which city in Ontario is warmest in January?
Hamilton is the warmest city in Ontario in January, with an average temperature of -4.7°C / 23.5°F.
Which city in Ontario has the mildest year-round climate?
Hamilton has the highest annual average temperature in Ontario at 8.9°C / 48°F, while Ottawa has the lowest at 6.3°C / 43.3°F.
Which city in Ontario has the most sunny months?
Hamilton matches our sunny profiles (warm/mild with limited rain) for 0 months of the year — the most of any city in Ontario.