August weather forecast
Toronto, Canada

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Colorfully lit night city of Toronto, Canada, with a view of the Nathan Phillips Square, and a large Toronto sign
Colorfully lit night city of Toronto, Canada, with a view of the Nathan Phillips Square, and a large Toronto sign

Weather in August

August remains hot, although the temperature slightly reduces from July, making it more pleasant. This marks the peak tourism month for Toronto, with visitors making the most of the summer sun and exploring the city's cultural and architectural wealth. From appreciating the city skyline from CN Tower to exploring the artists’ alley at Kensington Market, Toronto offers a myriad of attractions. The abundance of sunshine continues to keep the outdoor activities buzz alive. It's the perfect time to take advantage of the warm sea temperatures for a refreshing dive.

Temperature

The advent of August brings an average high-temperature of a still warm 24.5°C (76.1°F), exhibiting minor difference from the previous month. During the month of August, an average temperature of 18.4°C (65.1°F) is noted during the nights.

Humidity

August and September, with an average relative humidity of 74%, are the least humid months.

Rainfall

In Toronto, Canada, in August, it is raining for 14.2 days, with typically 49mm (1.93") of accumulated precipitation. In Toronto, during the entire year, the rain falls for 136.8 days and collects up to 420mm (16.54") of precipitation.

Snowfall

May through October are months without snowfall in Toronto.

Sea temperature

The month with the warmest seawater in Toronto, Canada, is August, with an average sea temperature of 22.3°C (72.1°F).
Note: For someone not comfortable with cold, swimming in 22.3°C (72.1°F) waters might be a stretch. However, with favorable conditions like abundant sunshine, mild wind, and warm air temperatures, the experience can be improved. And while wetsuits are not a must, they can be considered.

Daylight

In Toronto, the average length of the day in August is 13h and 56min.
On the first day of August in Toronto, sunrise is at 6:07 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:54 pm EDT.

Sunshine

The average sunshine in August is 10.6h.

UV index

The months with the highest UV index in Toronto are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during August translates into these guidelines:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Attention! The combination of sand and water reflections enhances UV ray intensity.
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Frequently asked questions

What are the temperatures in Toronto in August?

During August, Toronto experiences an average high-temperature of 24.5°C (76.1°F) and a low-temperature of 18.4°C (65.1°F).

What are the least humid months in Toronto?

The months with the lowest humidity in Toronto are August and September, with an average relative humidity of 74%.

What is the average humidity in August in Toronto?

In August, the average relative humidity in Toronto, Canada, is 74%.

How much does it rain in Toronto in August?

In Toronto, in August, during 14.2 rainfall days, 49mm (1.93") of precipitation is typically accumulated.

When it does not snow in Toronto?

In Toronto, snow does not fall in May through October.

When is the sea warmest in Toronto?

August is the month with the warmest seawater in Toronto, Canada, with an average sea temperature of 22.3°C (72.1°F).

What is the sea temperature in August in Toronto?

In August, the average sea temperature in Toronto, Canada, is 22.3°C (72.1°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 22.3°C (72.1°F) water may be enjoyable.

What is the average length of the day in August in Toronto?

In Toronto, Canada, the average day length in August is 13h and 56min.

When is the sunrise / sunset in August in Toronto?

On the first day of August in Toronto, Canada, sunrise is at 6:07 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:54 pm EDT.

How many hours of sunshine does Toronto have in August?

In August, the average sunshine duration is 10.6h.

What are the months with the highest UV index in Toronto?

The months with the highest UV index in Toronto are July and August, with an average maximum UV index of 6.

What is the UV index reading in August in Toronto?

The average daily maximum UV index in August in Toronto is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in August
Toronto, Canada

Average temperature in August - Toronto, Canada
  • Average high temperature in August: 24.5°C

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-2.3°C).

  • Average low temperature in August: 18.4°C

The months with the highest average low temperature are July and August (18.4°C).
The coldest month (with the lowest average low temperature) is January (-7°C).

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Average pressure in August
Toronto, Canada

Average pressure in August - Toronto, Canada
  • Average pressure in August: 1014.5mbar

The month with the highest atmospheric pressure is March (1018.4mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).

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Average wind speed in August
Toronto, Canada

Average wind speed in August - Toronto, Canada
  • Average wind speed in August: 12.6km/h

The windiest month (with the highest average wind speed) is January (19.5km/h).
The calmest month (with the lowest average wind speed) is July (11.7km/h).

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Average humidity in August
Toronto, Canada

Average humidity in August - Toronto, Canada
  • Average humidity in August: 74%

The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are August and September (74%).

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Average rainfall in August
Toronto, Canada

Average rainfall in August - Toronto, Canada
  • Average rainfall in August: 49mm

The wettest month (with the highest rainfall) is July (53mm).
The driest month (with the least rainfall) is February (19mm).

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Average rainfall days in August
Toronto, Canada

Average rainfall days in August - Toronto, Canada
  • Average rainfall days in August: 14.2 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (5.6 days).

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Average snowfall in August
Toronto, Canada

Average snowfall in August - Toronto, Canada
  • Average snowfall in August: 0mm

The month with the highest snowfall is January (57mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in August
Toronto, Canada

Average snowfall days in August - Toronto, Canada
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in August
Toronto, Canada

Average sea temperature in August - Toronto, Canada
  • Average sea temperature in August: 22.3°C

The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is March (1.9°C).

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Average daylight in August /
Average sunshine in August
Toronto, Canada

Average daylight in August / Average sunshine in August - Toronto, Canada
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in August
Toronto, Canada

Average sunshine days in August - Toronto, Canada
  • Average sunshine days in August: 13.3 days

The month with the most sunshine days is March (16.2 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in August
Toronto, Canada

Average UV index in August - Toronto, Canada
  • Average UV index in August: 6

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Toronto, Canada

Average cloud cover in August - Toronto, Canada
  • Average cloud cover in August: 26

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in August
Toronto, Canada

Average visibility in August - Toronto, Canada
  • Average visibility in August: 10km

The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).

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Toronto, Canada

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