Current sea water temperature:
+44.1°F
| Minimum sea water temperature in June: | 52.5°F |
| Maximum sea water temperature in June: | 36.3°F |
| Average sea water temperature in June: | 43.5°F |
| more information | |
14 days
forecast
forecast
| St. John's |
monthly
weather
weather
| St. John's |
Sea water temperature for the last 10 days:
| June 26 | 44.1°F | June 21 | 41.2°F |
| June 25 | 43.7°F | June 20 | 42.1°F |
| June 24 | 43.5°F | June 19 | 43.0°F |
| June 23 | 43.5°F | June 18 | 42.6°F |
| June 22 | 42.3°F | June 17 | 42.8°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:
2025
2024
2023
The average sea water temperature in August of 2025 was 57.9°F. The highest and lowest sea temperatures during the month were 60.6°F and 55.6°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 53.0°F. The highest and lowest sea temperatures during the month were 57.7°F and 47.3°F.
current
weather
weather
| St. John's |
weather in
July
July
| 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: 02:35
June 27, saturday
0300
48°F
NE
6 mph
6 mph
0600
48°F
N
6 mph
6 mph
0900
52°F
N
4 mph
4 mph
1200
57°F
N
3 mph
3 mph
1500
61°F
W
2 mph
2 mph
1800
57°F
N
2 mph
2 mph
2100
54°F
NE
2 mph
2 mph
June 28, sunday
0000
50°F
NE
6 mph
6 mph
