Ontario (Toronto)
August
Weather in Ontario for August 2026
Your guide to Ontario weather in August - trends and predictions
So far, August 2026 in Ontario is slightly warmer than the historical average by 1.2 °C.
Expect cooler weather in the next days in Ontario with the forecast suggesting a temperature of 24.7 °C, lower than the historical average.
In general, the average temperature in Ontario at the beginning of August is 27.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 24.9 °C by the end of August.
Ontario experiences moderate rainfall in August, with an average of 9 rainy days and a total precipitation of 59.2 mm.
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Temperatures
Rain 🌧️
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22
Dry days
9
Rainy days
0
Snow days
25°/18°
Temperatures
16 km/h
Avg max wind
66 %
Avg humidity
Ontario Weather August
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What’s the Weather Like in Ontario This August?
Discover the average temperatures and weather trends across Ontario’s cities this August.
Temperatures trend during August in Ontario
See the weather trend as well as the moving average line
August weather in Ontario day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Moderate rain at times | 27° /18° | 0.9 mm | 7 | |
| 2 Aug. |  Sunny | 26° /17° | 7.2 mm | 6 | |
| 3 Aug. |  Partly cloudy | 28° /17° | 2.1 mm | 7 | |
| 4 Aug. | Sunny | 28° /18° | 0.6 mm | 8 | |
| 5 Aug. |  Cloudy | 27° /17° | 0.5 mm | 7 | |
| 6 Aug. |  Patchy rain possible | 27° /18° | 1.2 mm | 7 | |
| 7 Aug. | Moderate or heavy rain shower | 27° /19° | 3.1 mm | 7 | |
| 8 Aug. | Moderate or heavy rain shower | 26° /19° | 2.3 mm | 6 | |
| 9 Aug. | Partly cloudy | 27° /18° | 1.8 mm | 6 | |
| 10 Aug. | Moderate or heavy rain shower | 26° /19° | 4.3 mm | 7 | |
| 11 Aug. | Patchy rain possible | 27° /18° | 0.5 mm | 7 | |
| 12 Aug. | Moderate or heavy rain shower | 28° /18° | 8.7 mm | 7 | |
| 13 Aug. | Sunny | 30° /17° | 0 mm | 6.7 | |
| 14 Aug. | Sunny | 26° /18° | 0.9 mm | 6.9 | |
| 15 Aug. | Sunny | 24° /17° | 0 mm | 6.8 | |
| 16 Aug. | Partly cloudy | 26° /20° | 6.7 mm | 6 | |
| 17 Aug. | Sunny | 25° /18° | 0.1 mm | 7 | |
| 18 Aug. | Sunny | 26° /18° | 0 mm | 7 | |
| 19 Aug. | Partly cloudy | 27° /20° | 2.2 mm | 7 | |
| 20 Aug. | Patchy rain possible | 23° /19° | 3.4 mm | 5 | |
| 21 Aug. | Sunny | 23° /17° | 0 mm | 6 | |
| 22 Aug. | Sunny | 23° /15° | 0 mm | 6 | |
| 23 Aug. | Partly cloudy | 21° /19° | 0 mm | 6 | |
| 24 Aug. | Partly cloudy | 23° /17° | 0 mm | 6 | |
| 25 Aug. | Sunny | 27° /19° | 5.7 mm | 7 | |
| 26 Aug. | Sunny | 22° /19° | 0.6 mm | 6 | |
| 27 Aug. | Partly cloudy | 25° /16° | 0 mm | 6 | |
| 28 Aug. | Sunny | 25° /16° | 5.4 mm | 6 | |
| 29 Aug. | Moderate or heavy rain shower | 25° /16° | 0.8 mm | 6 | |
| 30 Aug. | Partly cloudy | 25° /16° | 2.3 mm | 6 | |
| 31 Aug. | Sunny | 25° /15° | 2 mm | 6 | |
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Important Notice
Our weather forecast for Ontario in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ontario forecast closer to your planned date for the most up-to-date weather information.
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Ontario in August - FAQ
What are the expected maximum and minimum temperatures in Ontario during August?
During August, expect a variety of temperatures with highs around 25° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ontario during August?
Moderate rainfall is anticipated in Ontario during August, with a total of 59.2 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Ontario during August?
The average wind speed in Ontario during August is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Ontario
Explore the daily rainfall trends and prepare for Ontarios August weather 💧
Typically, Ontario has 9 rainy days in August with a total of 59.2 mm of rainfall.
UV exposure in Ontario during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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