Measurements:
°C
°F
Thunder Bay
30°F
E 8 mph
Feels like: 20°F
Precip: 0%
World Resorts Canada Thunder Bay Weather August Weather in Thunder Bay

Thunder Bay Weather: August

Average Day Temperature: 71.1°F
Average Night Temperature: 60.2°F
Sea Water Temperature: 64.9°F
Number of Sunny Days: 14 days
Sunshine Hours: 13.4 - 15.0 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.2 in

Air Temperature in August, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
14
28
42
56
70
84
98
112
Day Temperature   
Night Temperature

The highest day temperature in August 2024 was 83°F. The lowest night temperature was 50°F. The average values for day and night temperatures during August were 71.2°F и 59.3°F respectivly.

Thunder Bay Water Sea Temperature in August, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
52
56
60
64
68
72
76

The average sea surface temperature in August 2024 for Thunder Bay was 68.2°F. The maximum and minimum values were 66.2°F and 71.8°F respectively.

Sunny, Cloudy and Gloomy days
Sunny days
Cloudy days
Gloomy days
45%
35%
19%

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
0.2
0.4
0.7
0.9
1.1
1.3
1.6

Precipitation total in August for Thunder Bay is 1.2 in. It makes august one of the most rainy months of the year.

Wind Speed in August, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.6
3.3
4.9
6.6
8.2
9.9
11.5
13.2

The average wind speed in August is 6.6 mph. It makes August one of the most windless months of the year for Thunder Bay.

Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.6
3.3
4.9
6.5
8.2
9.8
11.4

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Thunder Bay in August is 8.9 hours.

Best Time to Visit Thunder Bay
The most sunny months:
September 15 days
August 14 days
July 12 days
The most warm months:
July 71.4 °F
August 71.1 °F
June 64.2 °F
Warmest sea temperature:
August 65.0 °F
September 61.4 °F
July 60.3 °F
The most cold months:
February 10.3 °F
January 10.9 °F
December 19.5 °F
The most rainy months:
August 3 days
September 2 days
April 2 days
The most windy months:
November 9 mph
December 9 mph
April 9 mph

Thunder Bay on the Weather Map

Canada Resorts:
NAME
Halifax +34
Moncton +32
Montreal +38
Niagara Falls +46
Ottawa +36
Prince Edward Island +32
Quebec +30
Saint John +32
St. John's +24
Sydney +28
Toronto +42
Vancouver +62
Victoria +46
Winnipeg +30
Yellowknife +18
24 Hours Weather Forecast
Thunder Bay
Local time: 21:07
06 apr, sunday
0000 28°F
SE
8 mph
0300 26°F
E
5 mph
0600 26°F
E
5 mph
0900 28°F
SE
6 mph
1200 30°F
SE
7 mph
1500 34°F
SE
8 mph
1800 30°F
SE
11 mph
2100 26°F
S
11 mph