Measurements:
°C
°F
Charlottetown
70°F
NW 6 mph
Feels like: 70°F
Precip: 87%
World Resorts Canada Charlottetown Weather

Charlottetown Sea Water Temperature

Current Sea Water Temperature:
+69.0°F
Maximum Sea Water Temperature in August: 76.6°F
Minimum Sea Water Temperature in August: 66.0°F
Average water temperature in August: 71.3°F

Sea Water Temperature for the Last 10 Days:

August 19 69.0°F August 14 73.4°F
August 18 69.4°F August 13 73.2°F
August 17 69.2°F August 12 74.2°F
August 16 70.8°F August 11 74.6°F
August 15 71.6°F August 10 76.4°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Charlottetown was 72.5°F. The maximum and minimum values were 69.0°F and 76.4°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Charlottetown was 67.2°F. The maximum and minimum values were 62.6°F and 71.6°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
July 9 days
May 9 days
The most warm months:
August 74.6 °F
July 74.3 °F
September 67.2 °F
Warmest sea temperature:
August 71.3 °F
July 68.4 °F
September 66.5 °F
The most cold months:
February 22.0 °F
January 22.9 °F
March 30.6 °F
The most rainy months:
November 5 days
September 4 days
April 3 days
The most windy months:
November 14 mph
December 14 mph
January 12 mph

Charlottetown on the Weather Map

24 Hours Weather Forecast
Charlottetown
Local time: 10:29
19 aug, wednesday
1200 74°F
N
6 mph
1500 78°F
N
2 mph
1800 72°F
N
4 mph
2100 70°F
NE
6 mph
20 aug, thursday
0000 66°F
E
10 mph
0300 64°F
E
9 mph
0600 62°F
E
8 mph
0900 68°F
E
9 mph