Current sea water temperature:
+34.2°F
| Minimum sea water temperature in December: | 41.9°F |
| Maximum sea water temperature in December: | 31.8°F |
| Average sea water temperature in December: | 35.7°F |
| more information | |
14 days
forecast
forecast
| Summerside |
monthly
weather
weather
| Summerside |
Sea water temperature for the last 10 days:
| December 16 | 34.2°F | December 11 | 34.5°F |
| December 15 | 34.3°F | December 10 | 34.9°F |
| December 14 | 34.5°F | December 9 | 36.0°F |
| December 13 | 34.3°F | December 8 | 37.0°F |
| December 12 | 34.7°F | December 7 | 37.4°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
December
December
| Summerside |
Best time for vacation in Summerside
Summerside on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Summerside
Local time: 10:09
December 16, tuesday
1200
21°F
E
19 mph
19 mph
1500
23°F
E
16 mph
16 mph
1800
25°F
E
15 mph
15 mph
2100
25°F
E
17 mph
17 mph
December 17, wednesday
0000
25°F
NE
14 mph
14 mph
0300
28°F
N
15 mph
15 mph
0600
32°F
N
20 mph
20 mph
0900
34°F
NE
22 mph
22 mph
