Climate - Toronto (Canada)
Average weather, temperature, rainfall, sunshine hours
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Climate chart - Toronto
In Toronto, Canada's largest city and the capital of Ontario, the climate is continental, with very cold winters and warm summers. Although the city is located in the south of the country, winter is cold because the North American continent cools down a lot, and outbreaks of polar air masses are frequent. However, being that it is exposed to different types of air masses, jumps in temperature are frequent. Also, due to its southern location, in Canada it is considered a relatively warm city.
Fog is fairly common at night and in the early morning, all year round, especially in rural areas around the city.
Here are the average temperatures at the Toronto/Buttonville Airport, in the northern part of the city. The districts overlooking the shores of the lake are a bit milder.
Toronto - Average temperatures (1991-2020) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
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| January | -9.2 | -1.7 | -5.4 | 15 | 29 | 22.2 |
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| February | -9 | -0.8 | -4.9 | 16 | 31 | 23.1 |
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| March | -4.3 | 4.6 | 0.2 | 24 | 40 | 32.3 |
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| April | 1.9 | 11.9 | 6.9 | 35 | 53 | 44.5 |
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| May | 8.5 | 19.6 | 14 | 47 | 67 | 57.3 |
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| June | 13.9 | 24.6 | 19.3 | 57 | 76 | 66.7 |
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| July | 16.6 | 27 | 21.8 | 62 | 81 | 71.2 |
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| August | 15.8 | 26 | 20.9 | 61 | 79 | 69.7 |
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| September | 11.6 | 22 | 16.8 | 53 | 72 | 62.3 |
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| October | 5.7 | 14.4 | 10.1 | 42 | 58 | 50.2 |
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| November | 0.3 | 7.6 | 4 | 33 | 46 | 39.2 |
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| December | -5 | 1.5 | -1.8 | 23 | 35 | 28.8 |
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| Year | 4 | 13.2 | 8.55 | 39.1 | 55.7 | 47.5 |
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Precipitation amounts to about 830 millimeters (32.5 inches) per year, and it's well distributed over the seasons. In fact, due to the continual clash between masses of warm and cold air, disturbances can form in all months, while in summer, when they are less frequent, afternoon thunderstorms can occur. During the long winter months, from mid-November to March, precipitation mainly occurs in the form of snow. In an average year, about one meter and a half (5 feet) of snow fall; sometimes, a snowfall can be seen already in October, and in spring, still in early May.
Here is the average precipitation.
Toronto - Average precipitation| Month | Millimeters | Inches | Days |
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| January | 60 | 2.4 | 15 |
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| February | 55 | 2.2 | 12 |
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| March | 55 | 2.2 | 13 |
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| April | 70 | 2.8 | 13 |
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| May | 80 | 3.1 | 13 |
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| June | 70 | 2.8 | 11 |
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| July | 65 | 2.6 | 10 |
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| August | 80 | 3.1 | 10 |
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| September | 85 | 3.3 | 11 |
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| October | 65 | 2.6 | 12 |
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| November | 85 | 3.3 | 13 |
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| December | 60 | 2.4 | 13 |
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| Year | 830 | 32.7 | 146 |
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Winter in Toronto runs from late November to mid-March and is cold: the average temperature, about -5.5 °C (22 °F) in January, is similar to that of northern European cities like Oslo. However, at least, the days here are not as short as in the Nordic countries.
Cold waves are accompanied by the blizzard, the north wind blowing in gusts.
Given the constant instability of the weather, the temperature can sometimes exceed freezing (0 °C or 32 °F) even in mid-winter: in these cases, snow can melt and it can rain. On the other hand, waves of intense cold, with peaks of -20/-25 °C (-4/-13 °F), occur practically every year.
Snowfalls are frequent, so much so that it snows for several days per month; occasionally, real snow storms may occur. Sometimes, the phenomenon called "ice storm" (or glaze ice) may occur, that is, rain that falls on frozen ground, freezing everything, roads, trees, light poles, cars etc.
Spring, from mid-March to May, is an unstable season, characterized by changes in temperature: initially cold in March, with snowfalls and frosts still quite frequent, it advances gradually, with the first warm days but also the return of cold weather, and it is still on average cold in April, when it can still snow in the first half of the month, while it becomes mild in May, when also afternoon thunderstorms start to erupt during sunny days.
Summer, from June to August, is warm, with highs usually about 26/27 °C (79/81 °F). On hot days, when the temperature can reach or even exceed 30 °C (86 °F), it can also be muggy because of the humidity brought by Lake Ontario. However, in summer, there are also cool and cloudy days, while in days of fine weather, which are cooled by the breeze from the lake, thunderstorms can erupt in the afternoon. Sometimes, even heat waves may occur, with highs around 36/37 °C (97/99 °F), generally of short duration.
Autumn, from September to mid-November, is initially pleasant, since there are many sunny days, with temperatures exceeding 25 °C (77 °F): these periods, called Indian summer, occur in September, but sometimes also in October. As weeks pass, however, the temperature decreases rapidly, low pressure areas become more frequent, and the first cold days occur.
All in all, the amount of sunshine in Toronto is good in late spring and summer; it is not high in the other months, and it's quite low in winter, when the sun is rarely seen. On average, there are 2,065 hours of sunshine per year. Here are the average sunshine hours per day.
Toronto - Sunshine hours| Month | Average | Total |
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January | 3 | 85 | February | 4 | 110 | March | 5 | 160 | April | 6 | 180 | May | 7.5 | 230 | June | 8.5 | 260 | July | 9 | 280 | August | 8 | 245 | September | 6.5 | 195 | October | 5 | 155 | November | 3 | 90 | December | 2.5 | 80 | Year | 5.7 | 2065 |
Lake Ontario is very cold in winter, when it's close to the freezing point, while in summer, it is still cool, but it becomes almost acceptable for swimming, at least for those who do not suffer from the cold, especially in August, when it reaches 21 °C (70 °F). Here are the average lake temperatures.
Toronto - Lake temperature| Month | Celsius (°C) | Fahrenheit (°F) |
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January | 3 | 37 | February | 2 | 36 | March | 2 | 36 | April | 3 | 37 | May | 7 | 45 | June | 13 | 55 | July | 19 | 66 | August | 21 | 70 | September | 19 | 66 | October | 14 | 57 | November | 9 | 48 | December | 5 | 41 | Year | 9.8 | 49.6 |
Best Time
The best time to visit Toronto runs from mid-May to late September. In the height of summer, ie in July and August, there may be hot and muggy days, so this period can be excluded if you cannot stand the heat; in May (and sometimes in early June), it can still be a bit cold. However, you always have to take into account the possibility of rain and changes in temperature.
Toronto - Weather by month
Based on the period 1991-2020
In January, the coldest month of the year, the weather in Toronto is usually freezing cold. The average temperature is of -5.4 °C (22 °F), with a minimum of -9.2 °C (15.4 °F) and a maximum of -1.7 °C (29 °F).
On the coldest nights of the month, the temperature usually drops to around -22 °C (-7.5 °F). However, it dropped to -35 °C (-31 °F) in January 1994.
On the warmest days of the month, the temperature usually reaches around 9 °C (48 °F). However, it reached 15 °C (59 °F) in January 2005.
Precipitation amounts to 60 mm (2.4 in), distributed over 15 days.
The day lasts on average 9 hours and 25 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
In February, the weather in Toronto is usually very cold. The average temperature is of -4.9 °C (23 °F), with a minimum of -9 °C (15.7 °F) and a maximum of -0.8 °C (30.5 °F).
On the coldest nights of the month, the temperature usually drops to around -20.5 °C (-4.5 °F). However, it dropped to -27 °C (-16.6 °F) in February 2015.
On the warmest days of the month, the temperature usually reaches around 9 °C (48 °F). However, it reached 17 °C (62.6 °F) in February 2017.
Precipitation amounts to 55 mm (2.2 in), distributed over 12 days.
The day lasts on average 10 hours and 30 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 14 kph (8 mph).
In March, the weather in Toronto is usually cold. The average temperature is of 0.2 °C (32 °F), with a minimum of -4.3 °C (24.3 °F) and a maximum of 4.6 °C (40.4 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -15 °C (4.5 °F). However, it dropped to -26 °C (-14.8 °F) in March 2003.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 16 °C (60.5 °F). However, it reached 26 °C (78.8 °F) in March 2012.
Precipitation amounts to 55 mm (2.2 in), distributed over 13 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 66%.
The average wind speed is 14 kph (9 mph).
In April, the weather in Toronto is usually quite mild. The average temperature is of 6.9 °C (44 °F), with a minimum of 1.9 °C (35.5 °F) and a maximum of 11.9 °C (53.5 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -5.5 °C (22 °F). However, it dropped to -10 °C (14 °F) in April 1995.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 23.5 °C (74.5 °F). However, it reached 30 °C (86 °F) in April 2002.
Precipitation amounts to 70 mm (2.8 in), distributed over 13 days.
The day lasts on average 13 hours and 30 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 62%.
The average wind speed is 14 kph (9 mph).
In May, the weather in Toronto is usually mild. The average temperature is of 14.0 °C (57 °F), with a minimum of 8.5 °C (47.3 °F) and a maximum of 19.6 °C (67.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 0.5 °C (33 °F). However, it dropped to -2 °C (28.4 °F) in May 1994.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 30 °C (86 °F). However, it reached 34 °C (93.2 °F) in May 2006.
Precipitation amounts to 80 mm (3.1 in), distributed over 13 days.
The day lasts on average 14 hours and 50 minutes. So the days are long.
There are on average 7.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 63%.
The average wind speed is 12 kph (7 mph).
In June, the weather in Toronto is usually warm. The average temperature is of 19.3 °C (67 °F), with a minimum of 13.9 °C (57.1 °F) and a maximum of 24.6 °C (76.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 7 °C (45 °F). However, it dropped to 4 °C (39.2 °F) in June 2007.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 33 °C (91.5 °F). However, it reached 37 °C (98.6 °F) in June 1995.
Precipitation amounts to 70 mm (2.8 in), distributed over 11 days.
The day lasts on average 15 hours and 25 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 8.5 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 65%.
The average wind speed is 11 kph (7 mph).
In July, the warmest month of the year, the weather in Toronto is usually warm. The average temperature is of 21.8 °C (71 °F), with a minimum of 16.6 °C (61.8 °F) and a maximum of 27 °C (80.7 °F).
On the coldest nights of the month, the temperature usually drops to around 10.5 °C (51 °F). However, it dropped to 7 °C (44.6 °F) in July 1995.
On the warmest days of the month, the temperature usually reaches around 33 °C (91.5 °F). However, it reached 37 °C (98.6 °F) in July 1995.
Precipitation amounts to 65 mm (2.6 in), distributed over 10 days.
The day lasts on average 15 hours and 0 minutes. So the days are long.
There are on average 9 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 66%.
The average wind speed is 11 kph (7 mph).
In August, the weather in Toronto is usually warm. The average temperature is of 20.9 °C (70 °F), with a minimum of 15.8 °C (60.5 °F) and a maximum of 26 °C (78.9 °F).
On the coldest nights of the month, the temperature usually drops to around 9.5 °C (49 °F). However, it dropped to 6 °C (42.8 °F) in August 2004.
On the warmest days of the month, the temperature usually reaches around 32.5 °C (90.5 °F). However, it reached 38 °C (100.4 °F) in August 2006.
Precipitation amounts to 80 mm (3.1 in), distributed over 10 days.
The day lasts on average 13 hours and 55 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 69%.
The average wind speed is 10 kph (6 mph).
In September, the weather in Toronto is usually very mild. The average temperature is of 16.8 °C (62 °F), with a minimum of 11.6 °C (52.9 °F) and a maximum of 22 °C (71.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 4 °C (39 °F). However, it dropped to -1 °C (30.2 °F) in September 1991.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31 °C (87.5 °F). However, it reached 35 °C (95 °F) in September 2013.
Precipitation amounts to 85 mm (3.3 in), distributed over 11 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).
In October, the weather in Toronto is usually mild. The average temperature is of 10.1 °C (50 °F), with a minimum of 5.7 °C (42.3 °F) and a maximum of 14.4 °C (58 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -2 °C (28.5 °F). However, it dropped to -5 °C (23 °F) in October 1992.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 25 °C (76.5 °F). However, it reached 31 °C (87.8 °F) in October 2007.
Precipitation amounts to 65 mm (2.6 in), distributed over 12 days.
The day lasts on average 10 hours and 55 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
In November, the weather in Toronto is usually quite cold. The average temperature is of 4.0 °C (39 °F), with a minimum of 0.3 °C (32.6 °F) and a maximum of 7.6 °C (45.8 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -8.5 °C (17 °F). However, it dropped to -14 °C (6.8 °F) in November 2000.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 17 °C (63 °F). However, it reached 21 °C (69.8 °F) in November 1999.
Precipitation amounts to 85 mm (3.3 in), distributed over 13 days.
The day lasts on average 9 hours and 35 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 31% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).
In December, the weather in Toronto is usually very cold. The average temperature is of -1.8 °C (29 °F), with a minimum of -5 °C (22.9 °F) and a maximum of 1.5 °C (34.8 °F).
On the coldest nights of the month, the temperature usually drops to around -16.5 °C (2.5 °F). However, it dropped to -26 °C (-14.8 °F) in December 2004.
On the warmest days of the month, the temperature usually reaches around 11 °C (52 °F). However, it reached 18 °C (64.4 °F) in December 1998.
Precipitation amounts to 60 mm (2.4 in), distributed over 13 days.
The day lasts on average 9 hours and 0 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 2.5 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
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