Measurements:
°C
°F
Thunder Bay
44°F
NE 3 mph
Feels like: 44°F
Precip: 100%
World Resorts Canada Thunder Bay Weather May Weather in Thunder Bay

Thunder Bay Weather: May

Average Day Temperature: 52.6°F
Average Night Temperature: 41.7°F
Sea Water Temperature: 38.7°F
Number of Sunny Days: 11 days
Sunshine Hours: 14.6 - 15.8 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.7 in

Air Temperature in May, °F

Select Year: 2023 2022 2021

The highest day temperature in May 2023 was 71°F. The lowest night temperature was 30°F. The average values for day and night temperatures during May were 54.3°F и 43.3°F respectivly.

Thunder Bay Water Sea Temperature in May, °F

Select Year: 2023 2022 2021

The average sea surface temperature in May 2023 for Thunder Bay was 36.6°F. The maximum and minimum values were 32.8°F and 40.8°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Thunder Bay is 0.7 in. It makes may one of the least rainy months of the year.

Wind Speed in May, mph

The average wind speed in May is 6.9 mph. It makes May one of the most windless months of the year for Thunder Bay.

Average Sunny Hours Per Day

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 May is 7.8 hours.

Best Time to Visit Thunder Bay
The most sunny months:
September 15 days
August 14 days
July 13 days
The most warm months:
July 71.3 °F
August 71.0 °F
June 65.2 °F
Warmest sea temperature:
August 64.2 °F
September 60.4 °F
July 59.9 °F
The most cold months:
February 10.2 °F
January 11.1 °F
December 19.0 °F
The most rainy months:
September 3 days
August 3 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 +52
Moncton +50
Montreal +52
Nanaimo +52
Ottawa +56
Quebec +42
Rocky Harbour +42
St. John's +38
Sydney +42
Tofino +50
Toronto +58
Vancouver +54
Victoria +50
Winnipeg +42
Yellowknife +34
24 Hours Weather Forecast
Thunder Bay
Local time: 10:19
04 may, saturday
1200 46°F
SW
1 mph
1500 44°F
NW
5 mph
1800 42°F
SE
3 mph
2100 42°F
SE
6 mph
05 may, sunday
0000 40°F
E
4 mph
0300 38°F
SE
9 mph
0600 36°F
SE
6 mph
0900 40°F
SE
7 mph