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Thunder Bay weather
Recommended for Ontario
The weather guide for Ontario (Thunder Bay) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
When is the best time to go to Thunder Bay?
The best time to go to Thunder Bay is July based on the following average weather conditions.
Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]
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Max Day Temperature (°F)
Best time to go for the weather
Metric (°C) | Imperial (°F)
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Which is the hottest month in Thunder Bay?
The hottest time of year in Thunder Bay is normally July. Expect maximum daytime temperatures to reach 75°F.
Which month has the most rain in Thunder Bay?
In terms of rainfall, August is usually the wettest month in Thunder Bay with 3.5 inches on average. There are normally 13 days in August with some rain.
When is it sunniest in Thunder Bay?
The sunniest time of year in Thunder Bay is normally July with bright sunshine on average for 61% of daylight hours; that's 10 hours of sunshine per day.
When is the sea warmest in Thunder Bay?
The sea is usually at its warmest in Thunder Bay in August when the water temperature reaches 55°F.
What is the flight time to Ontario from the UK?
The flight time to Ontario from the UK is typically 8 hours.
What is the time difference between Ontario and the UK?
The time difference between Ontario and the UK is GMT-5 to GMT-6 hours.
What is the main language spoken in Ontario?
What is the currency in Ontario?
The currency in Ontario is the Canadian Dollar (CAD).
Send money to Ontario with XE Money Transfers*.
Which plugs are used in Ontario?
Ontario uses electrical plug type A + B (120 Volts).
Which side of the road do they drive on in Ontario?
They drive on the right side of the road in Ontario.
Do you need a visa for Ontario?
Compare Thunder Bay weather with the USA
Below the Thunder Bay weather chart shows average maximum daytime temperature for Thunder Bay, Ontario, Canada and the USA (Washington).
Maximum daytime temperature (°F)
Metric (°C) | Imperial (°F)
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