Thunder Bay Weather in August
What's the weather like in Thunder Bay (Ontario) in August 2024?
The climate in Thunder Bay during August can be summarized as mild and a little damp.
August is in the summer in Thunder Bay and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 22.3°C 72.1°F |
|---|---|
| Nightly temperature | 10.2°C 50.3°F |
| Average temperature | 16.2°C 61.2°F |
| Daily sunshine | 9.1 hrs |
| Avg rainfall | 88 mm 3.5 ins |
| Rainy days | 13 days |
| Sea temperature | 14.2°C 57.5°F |
| Humidity | 77% |
| Windspeed | 10.8kph 7 mph |
On average August is the wettest month of the year in Thunder Bay with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
August temperatures in Thunder Bay
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Thunder Bay in August 2024.
Other monthly averages
Best places to visit in August
Thunder Bay weather stats
| Hottest month: | July | 23.4°C 74.1°F |
|---|---|---|
| Driest month: | February | 27mm 1.1ins |
| Sunniest month: | July | 10.3hrs |
| Coldest month: | January | -9.5°C 14.9°F |
| Wettest month: | August | 88mm 3.5ins |
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