Current sea water temperature:
+55.9°F
| Minimum sea water temperature in July: | 64.9°F |
| Maximum sea water temperature in July: | 49.8°F |
| Average sea water temperature in July: | 56.6°F |
| more information | |
14 days
forecast
forecast
| Saint John |
monthly
weather
weather
| Saint John |
Sea water temperature for the last 10 days:
| July 17 | 55.9°F | July 12 | 54.3°F |
| July 16 | 55.8°F | July 11 | 54.1°F |
| July 15 | 55.0°F | July 10 | 52.9°F |
| July 14 | 53.2°F | July 9 | 50.7°F |
| July 13 | 53.4°F | July 8 | 51.1°F |
Monthly sea water temperature, °F
When is the warmest sea in Saint John?
Based on the data about daily sea water temperature for the last three years the warmest sea in Saint John was noticed in August, September and July.
Monthly Sea Temperatures in Saint John, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 59.5°F. The highest and lowest sea temperatures during the month were 61.7°F and 57.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 58.5°F. The highest and lowest sea temperatures during the month were 61.2°F and 56.7°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 53.2°F. The highest and lowest sea temperatures during the month were 55.9°F and 50.7°F.
current
weather
weather
| Saint John |
weather in
July
July
| Saint John |
Best time for vacation in Saint John
Saint John on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Saint John
Local time: 09:05
July 17, friday
1200
68°F
SE
11 mph
11 mph
1500
73°F
SE
11 mph
11 mph
1800
77°F
NE
8 mph
8 mph
2100
57°F
NE
5 mph
5 mph
July 18, saturday
0000
57°F
E
6 mph
6 mph
0300
55°F
E
5 mph
5 mph
0600
54°F
E
4 mph
4 mph
0900
64°F
NE
7 mph
7 mph
