Canada

Thunder Bay weather in May

Weather in Thunder Bay: May


	Average day temperature:	52.2°F
	Average night temperature:	42.6°F

	Sea water temperature:	40.2°F

	Number of sunny days:	10 days
	Day length:	14.6 - 15.8 hours

	Number of rainy days:	1 day
	Precipitation totals:	0.7 in.

more information

14 days
forecast

Thunder Bay

sea water
temperature

Thunder Bay

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2024

2023

2022

Day temperature

Night temperature

The highest day temperature during May of 2024 was 64°F. At the same time the lowest night temperature was 36°F. Day and night temperature averages during May were 51.9°F and 42.9°F.

Show year:

2024

2023

2022

The average sea water temperature in May of 2024 was 41.5°F. The highest and lowest sea temperatures during the month were 47.3°F and 36.5°F.

	Sunny days
	Partly cloudy days
	Cloudy days

32%

29%

39%

Number of sunny, partly cloudy and cloudy days in May is almost equal.

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

1.2

1.1

1.3

1.2

1.1

1.3

Precipitation total value in Thunder Bay in May is 0.7 in. Other months of the year show relatively similar values.

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

9.1

9.6

8.4

7.0

6.6

5.9

6.4

9.1

8.5

8.4

8.5

9.1

9.6

8.4

7.0

6.6

5.9

6.4

7.0

9.1

8.5

8.4

8.5

The average wind speed value in May is 7.0 mph It makes May one of the least windy months of the year.

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

2.8

3.8

5.3

7.9

9.0

9.6

8.3

4.3

4.4

3.7

3.6

2.8

3.8

5.3

7.9

9.0

9.6

8.3

7.8

4.3

4.4

3.7

3.6

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.8.