Toronto climate
Toronto (Ontario, Canada) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 9 °C48 °F, and about 774 mm30 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Toronto climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | −131 | −522 | −326 | 542.1 | 26 |
| Feb | −131 | −622 | −326 | 491.9 | 25 |
| Mar | 338 | −327 | 033 | 532.1 | 21 |
| Apr | 847 | 235 | 541 | 712.8 | 6 |
| May | 1458 | 745 | 1152 | 732.9 | 0 |
| Jun | 2169 | 1457 | 1763 | 712.8 | 0 |
| Jul | 2576 | 1864 | 2170 | 752.9 | 0 |
| Aug | 2476 | 1865 | 2170 | 592.3 | 0 |
| Sep | 2169 | 1559 | 1864 | 662.6 | 0 |
| Oct | 1457 | 947 | 1152 | 742.9 | 0 |
| Nov | 745 | 337 | 541 | 662.6 | 6 |
| Dec | 236 | −228 | 032 | 632.5 | 20 |
| Year | 2576 | −622 | 948 | 77430 | 104 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 86% | 81% | 1.4 | 9:16 |
| Feb | 84% | 78% | 2.1 | 10:25 |
| Mar | 81% | 74% | 3.4 | 11:48 |
| Apr | 79% | 75% | 4.5 | 13:22 |
| May | 78% | 74% | 5.5 | 14:42 |
| Jun | 76% | 68% | 6.1 | 15:26 |
| Jul | 72% | 64% | 6.0 | 15:08 |
| Aug | 72% | 62% | 5.3 | 13:58 |
| Sep | 74% | 60% | 4.2 | 12:26 |
| Oct | 78% | 74% | 2.5 | 10:55 |
| Nov | 81% | 75% | 1.6 | 9:35 |
| Dec | 84% | 81% | 1.2 | 8:56 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Toronto is like
The warmest month is July, with an average high of 25 °C76 °F and a low of 18 °C64 °F. The coldest is February, when highs average −1 °C31 °F and lows −6 °C22 °F. Seasons are strongly marked: the warmest month is on average 24.4 °C44 °F warmer than the coldest.
Annual precipitation is moderate at about 774 mm30 in. Rain is spread fairly evenly through the year. The wettest month is July (75 mm2.9 in), the driest is February (49 mm1.9 in).
Relative humidity ranges from 72% in July to 86% in January. The clearest skies (lowest average cloud amount, 60%) are typical of September. Average wind speed near the ground ranges from 10 km/h (7 mph) in July to 20 km/h (13 mph) in January. Daylight lasts from about 8.9 hours in December to 15.4 hours in June.
A lasting snow cover is typical in December–March, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 17 cm).
Best time to visit Toronto
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 21 °C69 °F to 25 °C76 °F with 59 mm2.3 in to 75 mm2.9 in of precipitation per month.
The most challenging month is February, which is cold, with average highs of −1 °C31 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Toronto weather by month
- January−1 °C31 °F / −5 °C22 °F
- February−1 °C31 °F / −6 °C22 °F
- March3 °C38 °F / −3 °C27 °F
- April8 °C47 °F / 2 °C35 °F
- May14 °C58 °F / 7 °C45 °F
- June21 °C69 °F / 14 °C57 °F
- July25 °C76 °F / 18 °C64 °F
- August24 °C76 °F / 18 °C65 °F
- September21 °C69 °F / 15 °C59 °F
- October14 °C57 °F / 9 °C47 °F
- November7 °C45 °F / 3 °C37 °F
- December2 °C36 °F / −2 °C28 °F
What to pack for Toronto
- Winter (December–February) — highs −131 to 2 °C36 °F, lows −622 to −2 °C28 °F, about 55 mm2.2 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 338 to 14 °C58 °F, lows −327 to 7 °C45 °F, about 66 mm2.6 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Summer (June–August) — highs 2169 to 25 °C76 °F, lows 1457 to 18 °C65 °F, about 68 mm2.7 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 745 to 21 °C69 °F, lows 337 to 15 °C59 °F, about 69 mm2.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Toronto compares
Of the 40 places in Canada covered by World Climates, Toronto is the 14th warmest by annual mean temperature and the 22nd wettest by annual precipitation. See all of them on the Canada climate page.
Places in other countries with the most similar temperature and rainfall pattern: Buffalo (United States, Dfa), Chicago (United States, Dfa) and Rochester (United States, Dfa).
The same NASA POWER grid cell also contains Mississauga (pop. 717,961), Etobicoke (pop. 365,000) and Oakville (pop. 213,759). Their long-term averages in this dataset are essentially the same as for Toronto, so they do not have separate pages.
Nearby places
- Markham 21 km · 8 °C47 °F · 723 mm28 in
- Brampton 30 km · 8 °C47 °F · 770 mm30 in
- Ajax 33 km · 9 °C48 °F · 719 mm28 in
- Oshawa 49 km · 9 °C47 °F · 719 mm28 in
- St. Catharines 61 km · 10 °C50 °F · 872 mm34 in
- Guelph 71 km · 8 °C46 °F · 770 mm30 in
- Barrie 80 km · 7 °C45 °F · 623 mm25 in
- Brantford 95 km · 9 °C48 °F · 791 mm31 in
Frequently asked questions
What is the warmest month in Toronto?
July is the warmest month in Toronto, with an average high of 25 °C (76 °F) and an average low of 18 °C (64 °F).
What is the coldest month in Toronto?
February is the coldest month, with an average high of -1 °C (31 °F) and an average low of -6 °C (22 °F).
When does it rain the most in Toronto?
July is the wettest month with about 75 mm (2.9 in) of precipitation; February is the driest with about 49 mm (1.9 in).
What is the best time to visit Toronto?
Judging by long-term averages, the most comfortable months are June–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 99 m, while Toronto lies at about 161 m. Temperatures on this page were therefore adjusted by −0.4 °C0.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.