Current sea water temperature:
+58.6°F
| Minimum sea water temperature in August: | 64.4°F |
| Maximum sea water temperature in August: | 52.5°F |
| Average sea water temperature in August: | 59.4°F |
| more information | |
14 days
forecast
forecast
| Saint John |
monthly
weather
weather
| Saint John |
Sea water temperature for the last 10 days:
| August 6 | 58.6°F | August 1 | 52.5°F |
| August 5 | 56.7°F | July 31 | 56.3°F |
| August 4 | 54.7°F | July 30 | 57.0°F |
| August 3 | 55.0°F | July 29 | 58.6°F |
| August 2 | 54.3°F | July 28 | 60.3°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 54.5°F. The highest and lowest sea temperatures during the month were 60.8°F and 50.7°F.
current
weather
weather
| Saint John |
weather in
August
August
| 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: 11:33
August 06, thursday
1200
75°F
NE
4 mph
4 mph
1500
81°F
NE
8 mph
8 mph
1800
77°F
NE
6 mph
6 mph
2100
64°F
NE
5 mph
5 mph
August 07, friday
0000
64°F
NE
2 mph
2 mph
0300
63°F
NE
3 mph
3 mph
0600
61°F
NE
2 mph
2 mph
0900
72°F
NE
2 mph
2 mph
