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Lake Simcoe

Lake Simcoe Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Lake Simcoe, 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 Lake Water Temperature Information

9.3°C

TODAY

9.1°C

YESTERDAY

8.8°C

A WEEK AGO

As of today, the minimum water temperature in the Lake Simcoe 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 Simcoe Over the Last 30 Days

Today the water temperature in Lake Simcoe is lower than the same day in previous years. The water temperature range here in May is from 6°C to 22°C. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Lake Simcoe 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.

Daily Water Temperature Chart

DateCurrentAverageForecast
May 108.8°C14.0°C
May 118.9°C14.0°C
May 128.6°C14.0°C
May 138.7°C14.0°C
May 148.8°C14.0°C
May 158.9°C14.0°C
May 169.1°C14.0°C
May 179.3°C14.0°C
May 1814.0°C9.6°C
May 1914.0°C9.9°C
May 2014.0°C10.2°C
May 2114.0°C10.4°C
May 2214.0°C10.6°C
May 2314.0°C10.8°C
May 2414.0°C11.0°C
May 2514.0°C11.2°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Lake Simcoe by Month

January

MinimumAverageMaximum
1°C3.9°C6°C

February

MinimumAverageMaximum
0°C3.5°C7°C

March

MinimumAverageMaximum
0°C3°C6°C

April

MinimumAverageMaximum
2°C8°C14°C

May

MinimumAverageMaximum
6°C14°C22°C

June

MinimumAverageMaximum
19°C21.1°C24°C

July

MinimumAverageMaximum
23°C25°C27°C

August

MinimumAverageMaximum
24°C26.1°C29°C

September

MinimumAverageMaximum
20°C22.8°C25°C

October

MinimumAverageMaximum
13°C15.6°C18°C

November

MinimumAverageMaximum
8°C10°C12°C

December

MinimumAverageMaximum
3°C5.6°C8°C

Monthly Water Temperature Histogram for Lake Simcoe

Lake Simcoe Weather

MAY 17

12°C / 19°C
moderate rain showers

rain: 68% | wind: 40 km/h

MAY 18

7°C / 12°C
slight rain

rain: 68% | wind: 39 km/h

MAY 19

4°C / 12°C
overcast

rain: 2% | wind: 30 km/h

MAY 20

4°C / 14°C
overcast

rain: 1% | wind: 25 km/h

MAY 21

4°C / 11°C
light drizzle

rain: 37% | wind: 28 km/h

MAY 22

5°C / 9°C
moderate drizzle

rain: 47% | wind: 25 km/h

Water Temperature in Lake Simcoe: General Trends and Swimming Opportunities

Lake Simcoe is located in Canada in the province of Ontario, at an elevation of 715 feet (218 meters) above sea level.

Lake Simcoe is a large lake. Its surface area is 287 sq mi (744 sq km). Lakes of this size can serve as important regional resources, providing drinking water and fish stocks.

The water temperature in Lake Simcoe varies throughout the year, ranging from 34°F (1°C) in January to 84°F (29°C) in August. The average annual water temperature of the lake is 57°F (14°C). The months when the average water temperature in Lake Simcoe exceeds 68 degrees Fahrenheit (20°C) are May, June, July, August and September.

Geographical Location of Lake Simcoe

Frequently Asked Questions About Lake Simcoe and its Water Temperatures

What is the current water temperature in Lake Simcoe?

The water temperature today in Lake Simcoe is 49°F (9.3°C).

What is the water temperature in Lake Simcoe during the summer months?

The average water temperature in Lake Simcoe during the summer months is typically between 70°F to 79°F (21°C to 26°C), and it can reach up to 84°F (29°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Lake Simcoe in May?

The average water temperature in Lake Simcoe in May ranges from 64°F to 72°F (18°C to 22°C).

What is the water temperature in Lake Simcoe in September?

The average water temperature in Lake Simcoe in September is typically between 68°F to 77°F (20°C to 25°C).

Where is Lake Simcoe located?

Lake Simcoe is located in Canada in the province of Ontario, at an elevation of 715 feet (218 meters) above sea level. The surface area of the lake is 287.256 sq mi (743.99 sq km).

Is it possible to swim in Lake Simcoe and what are the possibilities for this?

Yes, it is possible to swim in Lake Simcoe, Ontario. However, the possibilities for swimming depend on local laws, water conditions, and individual swimming abilities.

What are the coordinates of Lake Simcoe?

Lake Simcoe is located at coordinates 44.4500°N 79.3300°W.