Current sea water temperature:
+32.0°F
| Minimum sea water temperature in March: | 34.3°F |
| Maximum sea water temperature in March: | 30.9°F |
| Average sea water temperature in March: | 32.2°F |
| more information | |
14 days
forecast
forecast
| St. John's |
monthly
weather
weather
| St. John's |
Sea water temperature for the last 10 days:
| March 17 | 32.0°F | March 12 | 32.9°F |
| March 16 | 32.2°F | March 11 | 32.7°F |
| March 15 | 32.2°F | March 10 | 32.7°F |
| March 14 | 32.2°F | March 9 | 31.3°F |
| March 13 | 34.2°F | March 8 | 31.3°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:
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
March
March
| 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: 06:09
March 17, tuesday
0900
39°F
NE
23 mph
23 mph
1200
43°F
NE
23 mph
23 mph
1500
46°F
NE
25 mph
25 mph
1800
48°F
NE
23 mph
23 mph
2100
50°F
NE
23 mph
23 mph
March 18, wednesday
0000
50°F
NE
26 mph
26 mph
0300
52°F
NE
28 mph
28 mph
0600
52°F
NE
27 mph
27 mph
