Georgian Bay Water Temperature

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Georgian Bay, Ontario is on the Severn River where it meets the waters of Georgian Bay, sometimes referred to as the ‘sixth Great Lake’ but actually part of the eastern portion of Lake Huron, where Manitoulin Island to the north and the Bruce Peninsular at the south cut it off. This picturesque bay area was once part of the historic Algonquin-Huron route for trade and is part of the greater Muskoka region.

Georgian Bay is a town close to Georgian Bay. August is the month with the hottest water temperature at 72.3°F / 22.4°C. The coldest month is March with an ø water temperature of 32°F / 0°C. June is the month with the lowest precipitation of 0in / 0mm and December with the highest precipitation in a year with 4.2in / 107.8mm. The avg. air temperature is around 68.7°F / 20.4°C, August is the month with the highest temperature. February is the coolest with 18.7°F / -7.4°C average air temperature. June, July, August, September would be the best time to visit. Warm-summer humid continental climate would be the climate here.

Georgian Bay Summary

Description Value
Current water temperature /
Warmest Month Water Temperature: August with 72.3°F / 22.4°C
Coldest Month Water Temperature: March with 32°F / 0°C
Warmest Month Air Temperature: August with 68.7°F / 20.4°C
Coldest Month Air Temperature: February with 18.7°F / -7.4°C
Wettest Month: December with 4.2in / 107.8mm
Driest Month: June with 0in / 0mm
Highest Humidity June with 86.4%
Lowest Humidity October with 74%
Best Time to Visit: June, July, August, September
Climate Classification Warm-summer humid continental climate

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Georgian Bay is comprised of a gently sloping basin with a deeper area by the Bruce Peninsula where it can be as deep as 60m just 100m from the shore. However, most areas don’t exceed about 25m in depth with about 10m being normal close to the shore, and water temperatures range from about 60.8 F in June to 66.2F in August. From December to March much of Georgian Bay is frozen and covered in ice.

The coves and islands are ideal for sailing and kayaking as well as for swimming, and there are several naturist beaches. Wasaga beach with its 9 miles of pure white sand is the world’s longest freshwater beach.

Georgian Bay water temperature by month

Georgian Bay water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

38.3 35.1 32.7

February

32.9 32.2 32

March

32.2 32 32

April

35.2 33.1 32.2

May

44.4 39 35.2

June

59.5 51.4 43.9

July

72.1 64.8 57.2

August

73.8 70.5 68.4

September

73.6 67.3 63

October

63 56.5 50.5

November

50.5 46.8 43.7

December

43.7 41 38.5

Georgian Bay water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

3.5 1.7 0.4

February

0.5 0.1 -0

March

0.1 0 -0

April

1.8 0.6 0.1

May

6.9 3.9 1.8

June

15.3 10.8 6.6

July

22.3 18.2 14

August

23.2 21.4 20.2

September

23.1 19.6 17.2

October

17.2 13.6 10.3

November

10.3 8.2 6.5

December

6.5 5 3.6
The highest water temperature will be reached in August with around 72.3°F / 22.4°C. The lowest in March with an average water temperature of 32°F / 0°C.

14 Days Weather Forecast for Georgian Bay

Georgian Bay weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Dec. 23
Snow
36 °F
24°F
2 °C
-4°C
5mph (8km/h)
south-southwest
0in (10mm)
95 %
88%
Dec. 24
Overcast clouds
32 °F
28°F
0 °C
-2°C
3mph (4km/h)
east
0in (0mm)
0 %
85%
Dec. 25
Overcast clouds
35 °F
29°F
2 °C
-2°C
2mph (3km/h)
south-southwest
0in (0mm)
0 %
81%
Dec. 26
Broken clouds
35 °F
33°F
2 °C
0°C
2mph (4km/h)
south
0in (0mm)
0 %
83%
Dec. 27
Overcast clouds
39 °F
33°F
4 °C
0°C
3mph (5km/h)
southeast
0in (0mm)
0 %
83%
Dec. 28
Overcast clouds
40 °F
36°F
4 °C
2°C
4mph (6km/h)
southeast
0in (0mm)
0 %
85%
Dec. 29
Light rain
40 °F
38°F
4 °C
3°C
3mph (5km/h)
southeast
0in (7mm)
80 %
92%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Dec. 30
Light rain
41 °F
39°F
5 °C
4°C
4mph (6km/h)
southeast
0in (7mm)
80 %
93%
Dec. 31
Light rain
41 °F
40°F
5 °C
4°C
2mph (3km/h)
south
0in (7mm)
80 %
96%
Jan. 01
Overcast clouds
42 °F
37°F
6 °C
3°C
1mph (2km/h)
west-northwest
0in (0mm)
10 %
87%
Jan. 02
Overcast clouds
37 °F
35°F
3 °C
2°C
2mph (3km/h)
west
0in (0mm)
10 %
84%
Jan. 03
Mix snow/rain
36 °F
34°F
2 °C
1°C
1mph (2km/h)
east-northeast
0in (0mm)
35 %
94%
Jan. 04
Mix snow/rain
36 °F
34°F
2 °C
1°C
4mph (6km/h)
east
0in (8mm)
90 %
92%
Jan. 05
Mix snow/rain
35 °F
33°F
2 °C
1°C
4mph (6km/h)
southwest
1in (19mm)
95 %
98%
Jan. 06
Light snow
24 °F
23°F
-5 °C
-5°C
4mph (6km/h)
north-northwest
0in (2mm)
90 %
82%
Jan. 07
Light snow
20 °F
19°F
-7 °C
-7°C
4mph (6km/h)
south
0in (2mm)
90 %
82%

Best Time to Visit Georgian Bay

The summer months from May to September are the best time for visits to Georgian Bay for sailing, fishing and kayaking, and the water is warm enough for a pleasant swim. Georgian Bay is easy to reach from Toronto International Airport, just 81 miles away. There are numerous small airlines which can take you to Parry Sound, or you can drive to Georgian Bay in two hours. Buses such as Ontario Northland go from Toronto to Parry Sound daily, and a local bus will whisk you to Georgian Bay in just 10 minutes.

Georgian Bay weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

31.6 21.4 10.6 3.4 11 79.1%

February

27.9 18.7 9.7 1.8 1 79%

March

35.8 25 13.3 0.1 1 80.2%

April

41.7 34.3 25.2 0.2 2 80.6%

May

52.7 43.7 37.8 0.5 0 84%

June

63.7 55 46.9 0 1 86.4%

July

71.8 66.2 58.8 0 0 80.6%

August

72.7 68.7 64.4 0 0 75.5%

September

71.8 63.5 54 0.3 1 74%

October

60.4 51.3 42.4 2.7 0 74%

November

48.4 40.6 32 1.2 9 75.9%

December

38.5 30.9 22.6 4.2 19 78%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

-0.2 -5.9 -11.9 85.3 11 79.1%

February

-2.3 -7.4 -12.4 45.7 1 79%

March

2.1 -3.9 -10.4 3.1 1 80.2%

April

5.4 1.3 -3.8 4.4 2 80.6%

May

11.5 6.5 3.2 12.3 0 84%

June

17.6 12.8 8.3 0 1 86.4%

July

22.1 19 14.9 0 0 80.6%

August

22.6 20.4 18 0 0 75.5%

September

22.1 17.5 12.2 7.2 1 74%

October

15.8 10.7 5.8 69 0 74%

November

9.1 4.8 0 31.3 9 75.9%

December

3.6 -0.6 -5.2 107.8 19 78%
The hottest avg. temperature is around 68.7°F / 20.4°C, August is the month with the highest temperature. February is the coolest with 18.7°F / -7.4°C average temperature. June is the month with the lowest precipitation of 0in / 0mm and December with the maximum precipitation in a year with 4.2in / 107.8mm.

Activities around Georgian Bay

Cycle the Georgian Bay coastal route to see some of the 32 lighthouses, or visit some of the 30,00 islands from Honey Harbor. From cross country skiing in winter, to exceptional sailing and swimming in crystal clear waters during summer, friendly locals and plenty of holiday accommodation make Georgian Bay an excellent destination.

Picture Copyright Flick CC BY 2.0: elPadawan

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