Thunder Bay Weather in May
During May, Thunder Bay experiences moderate daytime temperatures of 13°C (55°F) and cooler nights around 4°C (39°F). Expect quite a bit of rainfall. Around 73 mm (2.9 in) is typical.
Rainfall in Thunder Bay in May
Rain is expected on roughly 11 days, totalling around 73 mm (2.9 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Thunder Bay in May
If you're visiting Thunder Bay in May, expect highs of 13°C (55°F) and overnight lows around 4°C (39°F). Conditions are often most pleasant around the middle of the day. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Thunder Bay's climate page.
Thunder Bay Temperature in May
Min Temperature
4°C (39°F)
Max Temperature
13°C (55°F)
Chance of Rain
36%
Precipitation
73 mm (2.9 in)
Rainy days
11 days
Best Places in Canada in May
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Thunder Bay in May
The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Thunder Bay in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Thunder Bay's climate page.
See the full Thunder Bay climate overview or explore weather in Canada.
