Best time to go to Thunder Bay Average weather of Thunder Bay, Canada

When is the best time to go to Thunder Bay?

When is the best time to go to Thunder Bay? Here's some information to help you in your decision:

The best months for good weather in Thunder Bay are June, July, August and September
On average, the warmest months are July and August
The coldest months are January and February
The rainiest months are April, May, June, July, August and September

Annual weather in Thunder Bay

For full information about the climate and weather in Thunder Bay a specific month, click on the corresponding line below:

Month			Our opinion
January	7°F/18°F	2.1in	very bad weather	Thunder Bay in january
February	7°F/18°F	2.1in	very bad weather	Thunder Bay in february
March	20°F/31°F	3.1in	very bad weather	Thunder Bay in march
April	31°F/41°F	4.1in	very bad weather	Thunder Bay in april
May	43°F/56°F	3.9in	tolerable weather	Thunder Bay in may
June	52°F/65°F	4.1in	good weather	Thunder Bay in june
July	59°F/72°F	3.8in	good weather	Thunder Bay in july
August	58°F/72°F	3.5in	good weather	Thunder Bay in august
September	50°F/63°F	3.3in	good weather	Thunder Bay in september
October	40°F/49°F	3in	very bad weather	Thunder Bay in october
November	29°F/36°F	3.1in	very bad weather	Thunder Bay in november
December	16°F/23°F	2.9in	very bad weather	Thunder Bay in december

Weather and climate in Thunder Bay

Thunder Bay enjoys a warm-summer humid continental climate (without dry season) in accordance with the Köppen-Geiger classification. The yearly average maximum temperature in Thunder Bay is 45°F (ranging from 18°F in january to 72°F in july). Annual rainfall is 38.8in, with a minimum of 2.1in in january and a maximum of 4.1in in june.

From january to april the climate is very unfavorable. At lunchtime, it's 40°F in average and it rains in april about 4.1in.
In may the climate is just OK. In average, on the morning it is 43°F and, in may, 6 days of rain are expected.
Between the months of june and september the climate is good. the thermometer goes up to 63°F°C and you can expect to have 3.3in of rainfall/month during this period.
In the month of october the climate is bad. The record temperature this month is 72°F.
From november to december the climate is very bad. The record temperature this month is 41°F and, in december, 4 days of rain are expected.

Charts: temperature and rainfall in Thunder Bay

In the charts below, you can see the following seasonal norms for the city of Thunder Bay: the minimum and maximum outdoor temperature, the risk and amount of monthly rainfall, daily average sunshine, and relative humidity for each month of the year.

Outside temperature

Precipitation (rainfall)

Daily sunshine hours

Humidity

Peak visitor numbers and tourist seasons in Thunder Bay

Find out when Thunder Bay has its high tourist season (the period when the influx of tourists is highest) and off-peak tourist season using our data and figures.

Tourist seasons in Thunder Bay

Very low season in Thunder Bay
The months with the lowest number of tourists are: January, February, March, November and December.
Low season in Thunder Bay
The months with low numbers of tourists are: April, May and October.
High season in Thunder Bay
The number of visitors to Thunder Bay is high in: June and September.
Peak season in Thunder Bay
The largest number of tourists visiting Thunder Bay is during: July and August.

Figure: Visitor index for Thunder Bay month by month

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Best time for low prices in Thunder Bay

Average prices of hotels in Thunder Bay month by month

Generally, December is the month with the lowest hotel prices in Thunder Bay. So this is a great time to save on your holiday! In contrast, July is statistically the most expensive month of the year for hotels.