Current sea water temperature:
+59.7°F
| Minimum sea water temperature in August: | 64.9°F |
| Maximum sea water temperature in August: | 53.2°F |
| Average sea water temperature in August: | 58.8°F |
| more information | |
14 days
forecast
forecast
| St. John's |
monthly
weather
weather
| St. John's |
Sea water temperature for the last 10 days:
| August 26 | 59.7°F | August 21 | 56.7°F |
| August 25 | 59.7°F | August 20 | 56.7°F |
| August 24 | 58.5°F | August 19 | 56.7°F |
| August 23 | 58.5°F | August 18 | 56.3°F |
| August 22 | 57.4°F | August 17 | 56.3°F |
Monthly sea water temperature, °F
When is the warmest sea in St. John's?
Based on the data about daily sea water temperature for the last three years the warmest sea in St. John's was noticed in August, September and July.
Monthly Sea Temperatures in St. John's, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 56.3°F. The highest and lowest sea temperatures during the month were 59.7°F and 53.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 56.1°F. The highest and lowest sea temperatures during the month were 58.5°F and 54.0°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 51.1°F. The highest and lowest sea temperatures during the month were 55.9°F and 46.6°F.
current
weather
weather
| St. John's |
weather in
August
August
| St. John's |
Best time for vacation in St. John's
St. John's on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
St. John's
Local time: 14:28
August 26, wednesday
1500
77°F
SE
5 mph
5 mph
1800
72°F
NE
4 mph
4 mph
2100
66°F
E
7 mph
7 mph
August 27, thursday
0000
63°F
E
6 mph
6 mph
0300
61°F
E
7 mph
7 mph
0600
59°F
E
7 mph
7 mph
0900
68°F
E
9 mph
9 mph
1200
75°F
E
8 mph
8 mph
