Measurements:
°C
°F
CURRENT WEATHER
07:39
Thunder Bay
56°F
N 3 mph
Feels like: 56°F
Precip: 8%
World Resorts Canada Thunder Bay Weather

7 Day Weather Forecast

06.17
wed
DAY
66°F
NW 7 mph
precip
4%
NIGHT
44°F
SE 3 mph
precip
10%
06.18
thu
DAY
64°F
S 6 mph
precip
17%
NIGHT
54°F
SE 11 mph
precip
6%
06.19
fri
DAY
58°F
SE 8 mph
precip
13%
NIGHT
46°F
SE 6 mph
precip
14%
06.20
sat
DAY
58°F
SE 6 mph
precip
4%
NIGHT
48°F
SE 6 mph
precip
47%
06.21
sun
DAY
58°F
SW 6 mph
precip
3%
NIGHT
44°F
SE 3 mph
precip
7%
06.22
mon
DAY
64°F
NE 4 mph
precip
4%
NIGHT
50°F
N 3 mph
precip
8%
06.23
tue
DAY
52°F
NW 5 mph
precip
30%
NIGHT
46°F
SE 2 mph
precip
33%

Thunder Bay Sea Water Temperature in June, °F

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Thunder Bay was 6.6°F. The maximum and minimum values were 5.3°F and 9.2°F respectively.

Thunder Bay on the Weather Map

Best Time to Visit Thunder Bay
The most sunny months:
September 14 days
August 14 days
July 12 days
The most warm months:
July 71.5 °F
August 71.2 °F
June 64.4 °F
Warmest sea temperature:
August 64.9 °F
September 61.3 °F
July 60.6 °F
The most cold months:
January 9.8 °F
February 11.1 °F
December 17.9 °F
The most rainy months:
September 2 days
August 2 days
April 2 days
The most windy months:
November 9 mph
December 9 mph
April 8 mph
more details