Current sea water temperature:
+56.1°F
| Minimum sea water temperature in September: | 62.6°F |
| Maximum sea water temperature in September: | 55.0°F |
| Average sea water temperature in September: | 58.3°F |
| more information | |
14 days
forecast
forecast
| Saint John |
monthly
weather
weather
| Saint John |
Sea water temperature for the last 10 days:
| September 15 | 56.1°F | September 10 | 56.7°F |
| September 14 | 56.8°F | September 9 | 57.7°F |
| September 13 | 56.3°F | September 8 | 58.1°F |
| September 12 | 57.4°F | September 7 | 57.2°F |
| September 11 | 57.7°F | September 6 | 57.4°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 58.4°F. The highest and lowest sea temperatures during the month were 61.9°F and 52.5°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 57.6°F. The highest and lowest sea temperatures during the month were 59.0°F and 56.1°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
September
September
| 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: 14:51
September 15, tuesday
1500
66°F
N
3 mph
3 mph
1800
59°F
N
5 mph
5 mph
2100
50°F
W
1 mph
1 mph
September 16, wednesday
0000
50°F
N
1 mph
1 mph
0300
48°F
S
1 mph
1 mph
0600
48°F
NE
2 mph
2 mph
0900
54°F
NE
6 mph
6 mph
1200
61°F
NE
11 mph
11 mph
