Current sea water temperature:
+53.1°F
| Minimum sea water temperature in October: | 59.2°F |
| Maximum sea water temperature in October: | 52.2°F |
| Average sea water temperature in October: | 55.6°F |
| more information | |
14 days
forecast
forecast
| Saint John |
monthly
weather
weather
| Saint John |
Sea water temperature for the last 10 days:
| October 17 | 53.1°F | October 12 | 53.8°F |
| October 16 | 53.4°F | October 11 | 54.5°F |
| October 15 | 53.1°F | October 10 | 54.7°F |
| October 14 | 54.0°F | October 9 | 55.2°F |
| October 13 | 53.8°F | October 8 | 54.9°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 57.2°F. The highest and lowest sea temperatures during the month were 59.0°F and 55.2°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
October
October
| 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: 17:59
October 17, saturday
1800
43°F
SE
12 mph
12 mph
2100
37°F
SE
11 mph
11 mph
October 18, sunday
0000
30°F
SE
6 mph
6 mph
0300
30°F
SE
5 mph
5 mph
0600
30°F
SE
4 mph
4 mph
0900
36°F
E
5 mph
5 mph
1200
45°F
E
8 mph
8 mph
1500
48°F
NE
10 mph
10 mph
