Current sea water temperature:
+34.5°F
| Minimum sea water temperature in January: | 37.6°F |
| Maximum sea water temperature in January: | 32.0°F |
| Average sea water temperature in January: | 34.6°F |
| more information | |
14 days
forecast
forecast
| St. John's |
monthly
weather
weather
| St. John's |
Sea water temperature for the last 10 days:
| January 13 | 34.5°F | January 8 | 34.5°F |
| January 12 | 34.7°F | January 7 | 34.7°F |
| January 11 | 34.0°F | January 6 | 35.1°F |
| January 10 | 34.3°F | January 5 | 35.2°F |
| January 9 | 34.5°F | January 4 | 35.4°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
January
January
| 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: 00:28
January 14, wednesday
0300
30°F
E
15 mph
15 mph
0600
28°F
NE
12 mph
12 mph
0900
32°F
NE
12 mph
12 mph
1200
34°F
NE
13 mph
13 mph
1500
36°F
NE
12 mph
12 mph
1800
37°F
N
14 mph
14 mph
2100
39°F
NE
14 mph
14 mph
January 15, thursday
0000
41°F
NE
15 mph
15 mph
