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Thunder Bay
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Water Temperature in Thunder Bay in Lake Superior: Current and Forecast
On this page, you will find comprehensive information about the water temperature in Thunder Bay in Lake Superior, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Thunder Bay
49°F
TODAY
49°F
YESTERDAY
50°F
A WEEK AGO
As of today, the minimum water temperature in Thunder Bay ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for Lake Superior in Thunder Bay Over the Last 30 Days
Today the water temperature in Thunder Bay is higher than the same day in previous years. The water temperature range here in May is from 34°F to 52°F. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for Thunder Bay are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Table of Daily Water Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| May 23 | 50°F | 43°F | |
| May 24 | 51°F | 43°F | |
| May 25 | 51°F | 43°F | |
| May 26 | 51°F | 43°F | |
| May 27 | 51°F | 43°F | |
| May 28 | 52°F | 43°F | |
| May 29 | 49°F | 43°F | |
| May 30 | 49°F | 43°F | |
| May 31 | 43°F | 49°F | |
| Jun 1 | 48°F | 49°F | |
| Jun 2 | 48°F | 49°F | |
| Jun 3 | 48°F | 49°F | |
| Jun 4 | 48°F | 49°F | |
| Jun 5 | 48°F | 49°F | |
| Jun 6 | 48°F | 49°F | |
| Jun 7 | 48°F | 49°F |
Water Temperature Ranges in Thunder Bay by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 32°F | 36°F | 39°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 30°F | 34°F | 37°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 30°F | 34°F | 37°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 32°F | 36°F | 39°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 34°F | 43°F | 52°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 48°F | 55°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 54°F | 61°F | 68°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 64°F | 70°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 59°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 43°F | 54°F | 64°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 46°F | 54°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 32°F | 42°F | 52°F |
Monthly Water Temperature Histogram for Lake Superior in Thunder Bay
Known Beaches in the Area of Thunder Bay?
Boulevard Lake
Boulevard Lake is a 1-stars pebble beach, located in a 7 km (4 miles) radius of Thunder Bay. There are restrooms.
Thunder Bay Weather
MAY 31
45°F / 72°F
overcastrain: 1% | wind: 9 mph
JUNE 1
45°F / 63°F
overcastrain: 1% | wind: 8 mph
JUNE 2
43°F / 61°F
overcastrain: 4% | wind: 8 mph
JUNE 3
45°F / 63°F
light drizzlerain: 39% | wind: 8 mph
JUNE 4
46°F / 59°F
dense intensity drizzlerain: 51% | wind: 20 mph
Water Temperature in Thunder Bay: General Trends and Swimming Opportunities
Thunder Bay, located on the northwestern shore of Lake Superior, offers a beautiful but much colder swimming experience compared to other lakes in Ontario. The water temperature in Lake Superior near Thunder Bay can be quite chilly, even during the summer. During the warmer months, the water typically ranges from 50°F to 60°F (10°C to 15°C), which may feel brisk to swimmers. While it is swimmable, it can be a shock to the system for those who are not accustomed to colder waters. Many locals enjoy a quick dip, but the lake's cold temperatures may limit extended swimming sessions for most.
Despite the chilly water, Thunder Bay is known for its stunning beaches, such as the popular Sandy Beach and Boulevard Lake, which draw visitors for both relaxation and water activities. Although swimming is less common due to the cold temperatures, other activities such as kayaking, paddleboarding, and boating are quite popular. Lake Superior’s size and depth contribute to its colder water year-round, which is why it's essential to be prepared for lower temperatures if planning to swim or enjoy water sports.
In the winter months, the water temperature in Lake Superior around Thunder Bay drops further, often reaching around 32°F (0°C), freezing over in some areas. Swimming during this time is not recommended. However, during the summer, those who brave the cold waters are often rewarded with peaceful, scenic surroundings and the opportunity to cool off in one of the largest and most beautiful freshwater lakes in the world.
Geographical Location of Thunder Bay
Frequently Asked Questions About Thunder Bay and its Water Temperatures
What is the current water temperature in Thunder Bay?
The water temperature today in Thunder Bay is 49°F (9.6°C).
What is the water temperature in Thunder Bay during the summer months?
The average water temperature in Thunder Bay during the summer months is typically between 48°F to 64°F (9°C to 18°C), and it can reach up to 70°F (21°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in Thunder Bay in May?
The average water temperature in Thunder Bay in May ranges from 36°F to 45°F (2°C to 7°C).
What is the water temperature in Thunder Bay in September?
The average water temperature in Thunder Bay in September is typically between 52°F to 66°F (11°C to 19°C).
Is it possible to swim in the Lake Superior in Thunder Bay, and what are the available options for doing so?
Yes, it is possible to swim in Lake Superior in Thunder Bay. You can go to local beaches like Chippewa Park Beach, or by boating to less crowded areas.