Thunder Bay in august: average Weather, Temperature and Climate
Weather in Thunder Bay in august 2025
The weather in Thunder Bay in the month of august comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
good weather
Weather at 6am
58°F
Clear/Sunny
42% of time
25%
18%
9%
Weather at 12pm
70°F
Clear/Sunny
49% of time
27%
12%
9%
Weather at 6pm
67°F
Clear/Sunny
46% of time
27%
15%
6%
Weather at 3am
58°F
38%
23%
18%
15%
Evolution of daily average temperature and precipitation in Thunder Bay in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Thunder Bay in august.
The climate of Thunder Bay in august is good
In august in Thunder Bay, the climate is relatively dry (with 3.5in of precipitation over 5 days). The weather's not getting better compared to the previous month since in july there is an average of 3.8in of precipitation over 5 days.
The climate enjoyable around this city the month of august. Temperatures are up to 72°F. The seasonal minimum is 58°F. Thus, the mean temperature average on this month of august in Thunder Bay is 65°F. Note that these seasonal averages are in contrast with those observed in Thunder Bay in the month of august with a maximum record of 86°F in 2021 and a minimum record of 43°F in 2009. You can expect to have about 27 days with temperatures over 65°F, or 87% of time.
Day length in Thunder Bay in august is 14:18. Sunrise is at 05:52 and sunset is at 20:10.
With good weather conditions, august is recommended to go in that area.
Seasonal average climate and temperature of Thunder Bay in august
Check below seasonal norms These datas are set from the weather statements earlier years of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 65°F | ||||
| Highest temperature | 72°F | ||||
| Lowest temperature | 58°F | ||||
| Highest record temperature | 86°F (2021) | ||||
| Lowest record temperature | 43°F (2009) | ||||
| Number of days at +65°F | 27 day(s) (87%) | ||||
| Wind | |||||
| Wind speed | 16km/h | ||||
| Wind temperature | 58°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.5in | ||||
| Number of days with rainfall | 5 day(s) (17%) | ||||
| Record daily rainfall | 1.7in (2021) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 88% | ||||
| Visibility | 8.97km | ||||
| Cloud cover | 33% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:52 | ||||
| Time of sunset | 20:10 | ||||
| Length of day | 14:18 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last august?
Here is the day by day recorded weather in Thunder Bay in august 2024:
63°F to 79°F
65°F to 85°F
61°F to 76°F
56°F to 70°F
54°F to 70°F
54°F to 72°F
58°F to 72°F
59°F to 65°F
50°F to 54°F
49°F to 58°F
52°F to 74°F
58°F to 72°F
61°F to 77°F
61°F to 76°F
59°F to 63°F
59°F to 63°F
61°F to 72°F
58°F to 74°F
56°F to 67°F
50°F to 67°F
52°F to 68°F
56°F to 74°F
61°F to 76°F
61°F to 76°F
61°F to 74°F
65°F to 81°F
61°F to 68°F
56°F to 59°F
54°F to 67°F
61°F to 76°F
59°F to 76°F
Map: other cities in Canada in august
Cities near Thunder Bay:
| Marathon in august | good weather |
| Dryden in august | good weather |
| Sault Ste. Marie in august | good weather |
| Red Lake in august | good weather |
| Timmins in august | good weather |
| Winnipeg (Manitoba) in august | good weather |
| Greater Sudbury in august | good weather |
| Bruce Peninsula in august | good weather |
| Owen Sound in august | good weather |
| North Bay in august | good weather |
| Brandon in august | perfect weather |
| Orillia in august | good weather |
Click over cities on the map for information about the weather in august.
Thunder Bay
perfect weather
good
tolerable
bad
very bad
Weather data for Thunder Bay in august:
Weather data for Thunder Bay for august are derived from an average of the weather forecast since 2009 in Thunder Bay. There is a margin of error and these forecasts are to be considered as general information only. The weather in Thunder Bay can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Thunder Bay.