27.04
mon
mon
Day
59°F
W 8 mph
Precip.
0%
0%
Night
41°F
NW 5 mph
Precip.
0%
0%
28.04
tue
tue
Day
50°F
W 9 mph
Precip.
0%
0%
Night
41°F
NW 6 mph
Precip.
0%
0%
29.04
wed
wed
Day
41°F
W 10 mph
Precip.
100%
100%
Night
39°F
NW 8 mph
Precip.
0%
0%
30.04
thu
thu
Day
46°F
W 11 mph
Precip.
0%
0%
Night
43°F
W 13 mph
Precip.
0%
0%
01.05
fri
fri
Day
46°F
W 13 mph
Precip.
100%
100%
Night
43°F
E 2 mph
Precip.
83%
83%
02.05
sat
sat
Day
46°F
E 9 mph
Precip.
62%
62%
Night
37°F
N 4 mph
Precip.
0%
0%
03.05
sun
sun
Day
41°F
SW 19 mph
Precip.
100%
100%
Night
37°F
E 17 mph
Precip.
100%
100%
sea water
temperature
temperature
| Saint John |
monthly
weather
weather
| Saint John |
current
weather
weather
| Saint John |
14 days
forecast
forecast
| Saint John |
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 37.1°F. The highest and lowest sea temperatures during the month were 39.2°F and 34.9°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 42.9°F. The highest and lowest sea temperatures during the month were 45.9°F and 40.3°F.
Air temperature in Saint John, °F
Precipitation total in Saint John, in.
* Charts above show average data for the last 3 years.
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: 16:54
April 27, monday
1800
59°F
NW
6 mph
6 mph
2100
48°F
W
4 mph
4 mph
April 28, tuesday
0000
41°F
NW
5 mph
5 mph
0300
36°F
NW
2 mph
2 mph
0600
36°F
W
4 mph
4 mph
0900
43°F
W
8 mph
8 mph
1200
50°F
W
9 mph
9 mph
1500
55°F
W
9 mph
9 mph
