Measurements:
°C
°F
CURRENT WEATHER
19:34
Summerside
54°F
W 12 mph
Feels like: 50°F
Precip: 52%
World Resorts Canada Summerside Weather

7 Day Weather Forecast

09.28
mon
DAY
62°F
W 12 mph
precip
16%
NIGHT
54°F
W 15 mph
precip
73%
09.29
tue
DAY
58°F
W 7 mph
precip
55%
NIGHT
56°F
SW 11 mph
precip
45%
09.30
wed
DAY
58°F
SW 12 mph
precip
32%
NIGHT
54°F
N 4 mph
precip
31%
10.01
thu
DAY
64°F
NE 12 mph
precip
8%
NIGHT
60°F
NE 19 mph
precip
27%
10.02
fri
DAY
64°F
NE 11 mph
precip
19%
NIGHT
54°F
SE 9 mph
precip
19%
10.03
sat
DAY
50°F
SE 17 mph
precip
3%
NIGHT
44°F
SE 12 mph
precip
4%
10.04
sun
DAY
48°F
E 11 mph
precip
3%
NIGHT
48°F
N 11 mph
precip
17%

Summerside Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Summerside was 17.4°F. The maximum and minimum values were 15.3°F and 20.9°F respectively.

Summerside on the Weather Map

Best Time to Visit Summerside
The most sunny months:
August 12 days
May 10 days
July 10 days
The most warm months:
August 73.8 °F
July 73.2 °F
September 65.2 °F
Warmest sea temperature:
August 72.6 °F
July 70.7 °F
September 66.8 °F
The most cold months:
February 20.5 °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
more details