Current sea water temperature:
+35.1°F
| Minimum sea water temperature in April: | 43.0°F |
| Maximum sea water temperature in April: | 34.3°F |
| Average sea water temperature in April: | 38.4°F |
| more information | |
14 days
forecast
forecast
| Saint John |
monthly
weather
weather
| Saint John |
Sea water temperature for the last 10 days:
| April 6 | 35.1°F | April 1 | 35.4°F |
| April 5 | 35.8°F | March 31 | 35.2°F |
| April 4 | 34.9°F | March 30 | 36.0°F |
| April 3 | 35.2°F | March 29 | 34.7°F |
| April 2 | 35.2°F | March 28 | 35.2°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
April
April
| 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: 20:27
April 06, monday
2100
32°F
SE
11 mph
11 mph
April 07, tuesday
0000
32°F
SE
8 mph
8 mph
0300
32°F
SE
7 mph
7 mph
0600
30°F
SE
6 mph
6 mph
0900
32°F
SE
8 mph
8 mph
1200
37°F
E
6 mph
6 mph
1500
41°F
NE
7 mph
7 mph
1800
39°F
NE
7 mph
7 mph
