Measurements:
°C
°F
CURRENT WEATHER
21:07
Thunder Bay
20°F
SW 5 mph
Feels like: 16°F
Precip: 0%
World Resorts Canada Thunder Bay Weather

7 Day Weather Forecast

03.09
mon
DAY
36°F
SE 11 mph
precip
0%
NIGHT
16°F
W 5 mph
precip
0%
03.10
tue
DAY
18°F
SW 7 mph
precip
0%
NIGHT
18°F
SW 9 mph
precip
0%
03.11
wed
DAY
24°F
S 9 mph
precip
0%
NIGHT
22°F
SE 4 mph
precip
0%
03.12
thu
DAY
26°F
NW 2 mph
precip
0%
NIGHT
18°F
W 13 mph
precip
0%
03.13
fri
DAY
18°F
SW 12 mph
precip
83%
NIGHT
14°F
NE 1 mph
precip
100%
03.14
sat
DAY
18°F
W 4 mph
precip
28%
NIGHT
18°F
NW 4 mph
precip
80%
03.15
sun
DAY
6°F
NE 15 mph
precip
0%
NIGHT
0°F
NW 7 mph
precip
46%

Thunder Bay Sea Water Temperature in March, °F

Select Year: 2025 2024 2023

The average sea surface temperature in March 2025 for Thunder Bay was 0.6°F. The maximum and minimum values were 0.2°F and 1.0°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 9 mph
more details