Current sea water temperature:
+49.5°F
| Minimum sea water temperature in June: | 60.1°F |
| Maximum sea water temperature in June: | 45.0°F |
| Average sea water temperature in June: | 50.8°F |
| more information | |
14 days
forecast
forecast
| Saint John |
monthly
weather
weather
| Saint John |
Sea water temperature for the last 10 days:
| June 26 | 49.5°F | June 21 | 50.2°F |
| June 25 | 50.2°F | June 20 | 50.0°F |
| June 24 | 49.1°F | June 19 | 50.0°F |
| June 23 | 48.6°F | June 18 | 50.5°F |
| June 22 | 50.0°F | June 17 | 49.3°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 55.5°F. The highest and lowest sea temperatures during the month were 63.1°F and 49.8°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: 04:00
June 27, saturday
0600
55°F
W
1 mph
1 mph
0900
63°F
S
0 mph
0 mph
1200
64°F
NE
1 mph
1 mph
1500
68°F
N
2 mph
2 mph
1800
66°F
N
6 mph
6 mph
2100
57°F
NE
2 mph
2 mph
June 28, sunday
0000
55°F
NE
2 mph
2 mph
0300
54°F
NE
2 mph
2 mph
