Measurements:
°C
°F
Charlottetown
20°F
E 16 mph
Feels like: 6°F
Precip: 0%
World Resorts Canada Charlottetown Weather

Charlottetown Sea Water Temperature

Current Sea Water Temperature:
+30.6°F
Maximum Sea Water Temperature in December: 41.6°F
Minimum Sea Water Temperature in December: 29.4°F
Average water temperature in December: 34.2°F

Sea Water Temperature for the Last 10 Days:

December 13 30.6°F December 08 33.2°F
December 12 32.4°F December 07 35.2°F
December 11 31.4°F December 06 35.0°F
December 10 31.4°F December 05 36.6°F
December 09 32.0°F December 04 37.2°F

When is the Warmest Sea for Charlottetown?

According to our data for the last three years for Charlottetown the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Charlottetown was 71.0°F. The maximum and minimum values were 69.0°F and 75.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Charlottetown was 67.9°F. The maximum and minimum values were 62.6°F and 73.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Charlottetown was 67.5°F. The maximum and minimum values were 62.6°F and 71.8°F respectively.

Best Time to Visit Charlottetown
The most sunny months:
August 11 days
September 9 days
June 8 days
The most warm months:
August 74.6 °F
July 74.0 °F
September 67.2 °F
Warmest sea temperature:
August 71.3 °F
July 68.6 °F
September 66.5 °F
The most cold months:
February 21.5 °F
January 23.3 °F
March 30.6 °F
The most rainy months:
November 5 days
September 4 days
July 4 days
The most windy months:
November 14 mph
December 13 mph
January 12 mph

Charlottetown on the Weather Map

Canada Resorts:
NAME
Halifax +22
Kingston +22
Moncton +12
Montreal +12
Niagara Falls +18
Ottawa 0
Prince Edward Island +20
Quebec +10
St. John's +28
Sydney +24
Toronto +22
Vancouver +46
Victoria +48
Winnipeg -18
Yellowknife -12
24 Hours Weather Forecast
Charlottetown
Local time: 05:26
13 dec, saturday
0600 20°F
E
16 mph
0900 20°F
E
17 mph
1200 24°F
E
16 mph
1500 28°F
E
17 mph
1800 28°F
E
14 mph
2100 24°F
E
10 mph
14 dec, sunday
0000 24°F
NE
5 mph
0300 24°F
NW
6 mph