Lake Superior Water Temperature

Lake superior is a large freshwater lake situated in North America. Over two hundred rivers run into this lake, making it a meeting point of fresh waters from all across North America!

The lake superior area is warmest in summer. International visitors can reach the nearby Canadian regions such as Ontario by airport. Lake superior can then best be reached by car and subsequently explored on foot. Tourists can also use one of the many special guided tours operating in the area.

Lake Superior is a town close to Great Lakes. August is the month with the highest water temperature at 65.1°F / 18.4°C.
The coldest month is March with an average water temperature of 32.4°F / 0.2°C.
May is the driest at 0.2in / 4.1mm and December the wettest month with 3.4in / 87mm.
With an average air temperature of 66.9°F / 19.4°C, August is the warmest month in a year. February is the coldest with 16.3°F / -8.7°C average air temperature.
The Climate is described as Warm-summer humid continental climate. Best time to Visit would be in June, July, August, September.

Lake Superior Summary

Description Value
Warmest Month Water Temperature: August with 65.1°F / 18.4°C
Coldest Month Water Temperature: March with 32.4°F / 0.2°C
Warmest Month Air Temperature: August with 66.9°F / 19.4°C
Coldest Month Air Temperature: February with 16.3°F / -8.7°C
Wettest Month: December with 3.4in / 87mm
Driest Month: May with 0.2in / 4.1mm
Highest Humidity June with 85.5%
Lowest Humidity October with 73.7%
Best Time to Visit: June, July, August, September
Climate Classification Warm-summer humid continental climate

To get the warmest weather, the hottest month of July and the adjacent months of August and June are the best time to visit lake superior, but winter will provide you with spectacular snowy landscapes.

Lake Superior water temperature by month

Great Lakes water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

36.1 34.5 33.4

February

33.4 32.7 32.4

March

32.9 32.4 32.2

April

34.9 33.8 33.1

May

40.5 37 34.7

June

49.1 43.9 39.9

July

62.8 55.2 47.7

August

66.2 64.2 61.7

September

66 62.1 57.6

October

58.1 52.9 48.2

November

47.8 44.6 42.1

December

42.1 39.9 38.1

Great Lakes water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

2.3 1.4 0.8

February

0.8 0.4 0.2

March

0.5 0.2 0.1

April

1.6 1 0.6

May

4.7 2.8 1.5

June

9.5 6.6 4.4

July

17.1 12.9 8.7

August

19 17.9 16.5

September

18.9 16.7 14.2

October

14.5 11.6 9

November

8.8 7 5.6

December

5.6 4.4 3.4
August is the month with the warmest water temperature at 65.1°F / 18.4°C. The month with the coldest is March with an average water temperature of 32.4°F / 0.2°C.

Throughout the year, the water temperature of lake superior averages at 40 degrees Farenheit. In winter it can dip below minus thirty degrees, making it too cold to swim in but beautiful to observe. In the summer, however, the temperature can reach eighty degrees, making it possible to swim in the lake for those who like a rather bracing swim in fresh water!


Lake Superior weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jan. 15
Snow
34 °F
33°F
1 °C
1°C
3mph (5km/h)
east-northeast
0in (6mm)
95 %
98%
Jan. 16
Snow
33 °F
29°F
0 °C
-2°C
4mph (7km/h)
north-northwest
0in (6mm)
95 %
97%
Jan. 17
Light snow
26 °F
22°F
-4 °C
-6°C
2mph (4km/h)
west-southwest
0in (2mm)
90 %
91%
Jan. 18
Light snow
28 °F
20°F
-2 °C
-7°C
1mph (2km/h)
northwest
0in (2mm)
85 %
90%
Jan. 19
Light snow
19 °F
8°F
-7 °C
-13°C
2mph (4km/h)
northwest
0in (1mm)
80 %
86%
Jan. 20
Light snow
26 °F
6°F
-3 °C
-14°C
3mph (5km/h)
southwest
0in (0mm)
30 %
86%
Jan. 21
Light snow
16 °F
12°F
-9 °C
-11°C
3mph (5km/h)
west
0in (2mm)
80 %
85%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jan. 22
Light snow
18 °F
4°F
-8 °C
-16°C
3mph (4km/h)
north-northwest
0in (3mm)
90 %
89%
Jan. 23
Scattered clouds
20 °F
4°F
-7 °C
-16°C
2mph (3km/h)
west
0in (0mm)
20 %
85%
Jan. 24
Light snow
18 °F
12°F
-8 °C
-11°C
1mph (2km/h)
west-southwest
0in (3mm)
90 %
90%
Jan. 25
Light snow
12 °F
3°F
-11 °C
-16°C
4mph (6km/h)
north-northwest
0in (1mm)
70 %
86%
Jan. 26
Scattered clouds
16 °F
1°F
-9 °C
-17°C
2mph (3km/h)
northwest
0in (0mm)
15 %
85%
Jan. 27
Broken clouds
21 °F
2°F
-6 °C
-17°C
2mph (3km/h)
northwest
0in (0mm)
25 %
88%
Jan. 28
Light snow
12 °F
4°F
-11 °C
-16°C
3mph (5km/h)
north-northwest
0in (1mm)
75 %
89%
Jan. 29
Overcast clouds
17 °F
3°F
-9 °C
-16°C
2mph (3km/h)
west-southwest
0in (0mm)
10 %
84%
Jan. 30
Light snow
21 °F
15°F
-6 °C
-9°C
4mph (6km/h)
southwest
0in (0mm)
30 %
77%

Lake Superior weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

28.8 19.9 10.6 2.4 10 75.3%

February

24.4 16.3 9 1.6 0 77.1%

March

34.7 23.7 11.5 0.2 0 79.9%

April

40.5 32.9 24.4 0.2 1 81.3%

May

52.3 42.3 36.1 0.2 0 82.6%

June

62.8 52.3 43.9 0.2 0 85.5%

July

70.9 63.5 55.6 0.2 0 81.5%

August

72 66.9 63 0.5 0 76.3%

September

72.3 62.2 52.2 1.2 5 74.4%

October

59.7 50 42.1 2.1 0 73.7%

November

47.3 39.4 31.6 1.7 10 74.2%

December

35.4 29.3 24.4 3.4 20 75.7%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

-1.8 -6.7 -11.9 60.6 10 75.3%

February

-4.2 -8.7 -12.8 39.4 0 77.1%

March

1.5 -4.6 -11.4 5.8 0 79.9%

April

4.7 0.5 -4.2 6.1 1 81.3%

May

11.3 5.7 2.3 4.1 0 82.6%

June

17.1 11.3 6.6 4.9 0 85.5%

July

21.6 17.5 13.1 6.2 0 81.5%

August

22.2 19.4 17.2 11.6 0 76.3%

September

22.4 16.8 11.2 31.6 5 74.4%

October

15.4 10 5.6 53.6 0 73.7%

November

8.5 4.1 -0.2 44.1 10 74.2%

December

1.9 -1.5 -4.2 87 20 75.7%
May is the most draught at 0.2in / 4.1mm and December the month with the most rain around 3.4in / 87mm. The avg. temperature is around 66.9°F / 19.4°C, August is the hottest month in a year. February is the coolest with 16.3°F / -8.7°C avg. temperature.

If you would like to swim in the lake during the summer months but do not like the idea of getting overly cold, one great tip is to hire or purchase a dry suit. This will keep you warm and dry whilst allowing you to enjoy the water of this stunning lake.

Activities & POI in Lake Superior

Type of Activity List
Attraction Half Built Bridge, Archery Course, SS Meteor

Picture Copyright: Flickr CC 2.0 Lordcolus

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