World Resorts

Canada

Thunder Bay Weather

Thunder Bay 14 Days Forecast

27.04
mon

Day

46°F

W 11 mph

Precip.
0%

Night

37°F

S 7 mph

Precip.
54%

28.04
tue

Day

41°F

SE 19 mph

Precip.
0%

Night

32°F

SE 5 mph

Precip.
0%

29.04
wed

Day

41°F

SE 7 mph

Precip.
78%

Night

32°F

S 5 mph

Precip.
0%

30.04
thu

Day

43°F

W 2 mph

Precip.
71%

Night

30°F

SE 0 mph

Precip.
0%

01.05
fri

Day

43°F

N 2 mph

Precip.
0%

Night

32°F

E 3 mph

Precip.
0%

02.05
sat

Day

46°F

NW 4 mph

Precip.
0%

Night

36°F

N 1 mph

Precip.
0%

03.05
sun

Day

52°F

N 2 mph

Precip.
0%

Night

43°F

S 6 mph

Precip.
0%

04.05
mon

Day

48°F

W 3 mph

Precip.
0%

Night

41°F

NE 2 mph

Precip.
0%

05.05
tue

Day

50°F

NW 3 mph

Precip.
29%

Night

41°F

NE 3 mph

Precip.
43%

06.05
wed

Day

50°F

NW 5 mph

Precip.
29%

Night

39°F

N 3 mph

Precip.
0%

07.05
thu

Day

55°F

N 7 mph

Precip.
80%

Night

45°F

N 2 mph

Precip.
0%

08.05
fri

Day

46°F

S 12 mph

Precip.
0%

Night

43°F

SW 4 mph

Precip.
0%

09.05
sat

Day

50°F

W 7 mph

Precip.
0%

Night

43°F

W 4 mph

Precip.
0%

10.05
sun

Day

46°F

W 9 mph

Precip.
0%

Night

43°F

SW 6 mph

Precip.
63%

sea water
temperature

Thunder Bay

monthly
weather

Thunder Bay

current
weather

Thunder Bay

7 days
forecast

Thunder Bay

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2026

2025

2024

The average sea water temperature in April of 2026 was 33.4°F. The highest and lowest sea temperatures during the month were 34.9°F and 32.7°F.

Show year:

2025

2024

2023

The average sea water temperature in May of 2025 was 41.0°F. The highest and lowest sea temperatures during the month were 49.6°F and 36.1°F.