Current sea water temperature:
+51.6°F
| Minimum sea water temperature in July: | 60.1°F |
| Maximum sea water temperature in July: | 44.2°F |
| Average sea water temperature in July: | 52.7°F |
| more information | |
14 days
forecast
forecast
| St. John's |
monthly
weather
weather
| St. John's |
Sea water temperature for the last 10 days:
| July 17 | 51.6°F | July 12 | 51.4°F |
| July 16 | 51.3°F | July 11 | 50.9°F |
| July 15 | 51.8°F | July 10 | 49.5°F |
| July 14 | 51.3°F | July 9 | 50.2°F |
| July 13 | 51.3°F | July 8 | 50.0°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 49.7°F. The highest and lowest sea temperatures during the month were 51.8°F and 46.6°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: 08:16
July 17, friday
0900
63°F
N
15 mph
15 mph
1200
64°F
NE
15 mph
15 mph
1500
66°F
NE
9 mph
9 mph
1800
63°F
NE
9 mph
9 mph
2100
55°F
NE
9 mph
9 mph
July 18, saturday
0000
54°F
NE
11 mph
11 mph
0300
50°F
E
11 mph
11 mph
0600
52°F
NE
12 mph
12 mph
