Current sea water temperature:
+48.0°F
| Minimum sea water temperature in May: | 55.8°F |
| Maximum sea water temperature in May: | 37.0°F |
| Average sea water temperature in May: | 46.9°F |
| more information | |
14 days
forecast
forecast
| Summerside |
monthly
weather
weather
| Summerside |
Sea water temperature for the last 10 days:
| May 17 | 48.0°F | May 12 | 45.0°F |
| May 16 | 45.3°F | May 11 | 45.5°F |
| May 15 | 45.3°F | May 10 | 46.0°F |
| May 14 | 47.5°F | May 9 | 47.5°F |
| May 13 | 44.6°F | May 8 | 46.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Summerside?
Based on the data about daily sea water temperature for the last three years the warmest sea in Summerside was noticed in August, July and September.
Monthly Sea Temperatures in Summerside, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 70.2°F. The highest and lowest sea temperatures during the month were 74.8°F and 67.3°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.7°F. The highest and lowest sea temperatures during the month were 74.1°F and 62.4°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 66.2°F. The highest and lowest sea temperatures during the month were 70.0°F and 61.3°F.
current
weather
weather
| Summerside |
weather in
May
May
| Summerside |
Best time for vacation in Summerside
Summerside on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Summerside
Local time: 16:59
May 17, sunday
1800
66°F
S
19 mph
19 mph
2100
54°F
SE
17 mph
17 mph
May 18, monday
0000
46°F
SE
16 mph
16 mph
0300
45°F
E
12 mph
12 mph
0600
45°F
SE
13 mph
13 mph
0900
46°F
SE
12 mph
12 mph
1200
50°F
SE
11 mph
11 mph
1500
52°F
SE
5 mph
5 mph
