18.03
wed
wed
Day

25°F
E 10 mph
Precip.
0%
0%
Night

25°F
SW 2 mph
Precip.
0%
0%
19.03
thu
thu
Day

30°F
NW 8 mph
Precip.
0%
0%
Night

30°F
N 4 mph
Precip.
0%
0%
20.03
fri
fri
Day

34°F
N 12 mph
Precip.
0%
0%
Night

34°F
NE 7 mph
Precip.
0%
0%
21.03
sat
sat
Day

37°F
SE 10 mph
Precip.
0%
0%
Night

34°F
S 2 mph
Precip.
0%
0%
22.03
sun
sun
Day

39°F
N 12 mph
Precip.
100%
100%
Night

43°F
N 27 mph
Precip.
100%
100%
23.03
mon
mon
Day

39°F
E 19 mph
Precip.
61%
61%
Night

27°F
SE 17 mph
Precip.
78%
78%
24.03
tue
tue
Day

27°F
SE 18 mph
Precip.
0%
0%
Night

28°F
E 8 mph
Precip.
0%
0%
25.03
wed
wed
Day

21°F
SE 19 mph
Precip.
0%
0%
Night

16°F
S 9 mph
Precip.
0%
0%
26.03
thu
thu
Day

23°F
NW 7 mph
Precip.
0%
0%
Night

39°F
N 17 mph
Precip.
100%
100%
27.03
fri
fri
Day

45°F
NE 19 mph
Precip.
100%
100%
Night

34°F
NE 5 mph
Precip.
0%
0%
28.03
sat
sat
Day

39°F
SE 12 mph
Precip.
87%
87%
Night

18°F
SE 14 mph
Precip.
0%
0%
29.03
sun
sun
Day

27°F
S 6 mph
Precip.
0%
0%
Night

27°F
N 6 mph
Precip.
0%
0%
30.03
mon
mon
Day

37°F
NW 22 mph
Precip.
68%
68%
Night

41°F
E 11 mph
Precip.
0%
0%
31.03
tue
tue
Day

34°F
E 13 mph
Precip.
0%
0%
Night

28°F
SE 11 mph
Precip.
0%
0%
sea water
temperature
temperature
| Saint John |
monthly
weather
weather
| Saint John |
current
weather
weather
| Saint John |
7 days
forecast
forecast
| Saint John |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 35.2°F. The highest and lowest sea temperatures during the month were 36.3°F and 33.8°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 37.1°F. The highest and lowest sea temperatures during the month were 41.2°F and 34.3°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: 12:34
March 18, wednesday
1500

27°F
E
10 mph
10 mph
1800

27°F
SE
6 mph
6 mph
2100

27°F
SW
2 mph
2 mph
March 19, thursday
0000

25°F
SW
2 mph
2 mph
0300

25°F
W
4 mph
4 mph
0600

25°F
W
4 mph
4 mph
0900

28°F
NW
7 mph
7 mph
1200

30°F
NW
8 mph
8 mph




























