Toronto climate by month
What the weather is like
Toronto has a hot-summer humid continental climate (Köppen Dfa): warm summers, cold winters and precipitation in every season.
The warmest month is July, when afternoons average 27° and nights 17°. January is the coolest month, with highs of 0° and lows of -7°. The difference between the warmest and the coolest month is about 26°, a large swing typical of continental interiors.
About 924 mm of precipitation falls in an average year. December is the wettest month (69 mm, 16 wet days) and February the driest (62 mm, 10 wet days). Cloud cover ranges from 28% in July to 54% in December.
The sea reaches about 21° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Ottawa, the capital, Toronto is 0.2° warmer on a July afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 27° · July
- Coldest nights
- -7° · January
- Wettest month
- December
- Driest month
- February
- Clearest skies
- July · 28% cloud
- Warmest sea
- 21° · August
- Longest day
- 15 h 26 min
- Shortest day
- 8 h 57 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 0° | 0° | 5° | 12° | 19° | 24° | 27° | 26° | 22° | 14° | 8° | 2° |
| Average low | -7° | -7° | -2° | 3° | 9° | 15° | 17° | 17° | 13° | 7° | 2° | -3° |
| Precipitation | 65 mm | 62 mm | 59 mm | 78 mm | 84 mm | 83 mm | 86 mm | 92 mm | 81 mm | 77 mm | 88 mm | 69 mm |
| Wet days (≥1 mm) | 14.5 | 10.2 | 10.2 | 13 | 11.8 | 13.8 | 14.5 | 13.8 | 10.8 | 15.3 | 14.3 | 15.8 |
| Cloud cover | 53% | 46% | 43% | 42% | 38% | 33% | 28% | 29% | 34% | 40% | 49% | 54% |
| Sea temperature | 4° | 3° | 3° | 4° | 7° | 15° | 20° | 21° | 19° | 13° | 8° | 5° |
| Daylight | 9h 17 | 10h 31 | 11h 53 | 13h 25 | 14h 43 | 15h 26 | 15h 08 | 14h 00 | 12h 32 | 11h 03 | 9h 41 | 8h 57 |
| Month score | 15 | 27 | 29 | 32 | 69 | 66 | 59 | 63 | 73 | 44 | 17 | 15 |