Measurements:
°C
°F
Summerside
20°F
SE 6 mph
Feels like: 10°F
Precip: 0%
World Resorts Canada Summerside Weather

Summerside Sea Water Temperature

Current Sea Water Temperature:
+26.6°F
Maximum Sea Water Temperature in February: 31.4°F
Minimum Sea Water Temperature in February: 26.6°F
Average water temperature in February: 29.2°F

Sea Water Temperature for the Last 10 Days:

February 05 26.6°F January 31 27.0°F
February 04 26.8°F January 30 27.2°F
February 03 26.8°F January 29 27.4°F
February 02 26.8°F January 28 27.8°F
February 01 27.0°F January 27 28.0°F

When is the Warmest Sea for Summerside?

According to our data for the last three years for Summerside 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 Summerside was 72.4°F. The maximum and minimum values were 69.2°F and 77.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Summerside was 70.8°F. The maximum and minimum values were 63.8°F and 76.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Summerside was 68.0°F. The maximum and minimum values were 62.6°F and 72.2°F respectively.

Best Time to Visit Summerside
The most sunny months:
August 12 days
September 10 days
May 9 days
The most warm months:
August 73.5 °F
July 72.9 °F
September 65.8 °F
Warmest sea temperature:
August 72.5 °F
July 70.9 °F
September 67.1 °F
The most cold months:
February 20.1 °F
January 21.6 °F
March 29.0 °F
The most rainy months:
August 3 days
June 3 days
September 3 days
The most windy months:
November 16 mph
December 16 mph
January 14 mph

Summerside on the Weather Map

Canada Resorts:
NAME
Halifax +24
Moncton +18
Montreal +14
Niagara Falls +14
Ottawa +14
Prince Edward Island +20
Quebec +8
Saint John +20
St. John's +16
Sydney +28
Toronto +18
Vancouver +52
Victoria +54
Winnipeg +40
Yellowknife -10
24 Hours Weather Forecast
Summerside
Local time: 17:47
05 feb, thursday
1800 20°F
SE
6 mph
2100 18°F
SE
10 mph
06 feb, friday
0000 16°F
SE
7 mph
0300 10°F
E
6 mph
0600 6°F
SE
6 mph
0900 0°F
SE
2 mph
1200 8°F
S
2 mph
1500 12°F
SW
4 mph