22.05
fri
fri
Day
59°F
SE 11 mph
Precip.
0%
0%
Night
45°F
SE 4 mph
Precip.
0%
0%
23.05
sat
sat
Day
55°F
S 11 mph
Precip.
0%
0%
Night
41°F
N 1 mph
Precip.
0%
0%
24.05
sun
sun
Day
59°F
NE 5 mph
Precip.
0%
0%
Night
43°F
NE 5 mph
Precip.
0%
0%
25.05
mon
mon
Day
45°F
W 6 mph
Precip.
100%
100%
Night
48°F
SW 9 mph
Precip.
100%
100%
26.05
tue
tue
Day
55°F
S 7 mph
Precip.
0%
0%
Night
48°F
NW 4 mph
Precip.
100%
100%
27.05
wed
wed
Day
50°F
S 11 mph
Precip.
50%
50%
Night
41°F
S 6 mph
Precip.
0%
0%
28.05
thu
thu
Day
59°F
SE 6 mph
Precip.
0%
0%
Night
50°F
NE 8 mph
Precip.
0%
0%
29.05
fri
fri
Day
68°F
S 13 mph
Precip.
100%
100%
Night
52°F
S 14 mph
Precip.
0%
0%
30.05
sat
sat
Day
61°F
N 2 mph
Precip.
0%
0%
Night
48°F
NE 11 mph
Precip.
0%
0%
31.05
sun
sun
Day
64°F
N 6 mph
Precip.
100%
100%
Night
54°F
W 1 mph
Precip.
100%
100%
01.06
mon
mon
Day
55°F
NW 4 mph
Precip.
100%
100%
Night
54°F
N 1 mph
Precip.
0%
0%
02.06
tue
tue
Day
64°F
SE 12 mph
Precip.
0%
0%
Night
52°F
NE 9 mph
Precip.
0%
0%
03.06
wed
wed
Day
64°F
E 8 mph
Precip.
100%
100%
Night
50°F
E 4 mph
Precip.
0%
0%
04.06
thu
thu
Day
52°F
S 8 mph
Precip.
100%
100%
Night
50°F
S 2 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 May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 43.3°F. The highest and lowest sea temperatures during the month were 46.4°F and 39.6°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 48.3°F. The highest and lowest sea temperatures during the month were 52.3°F and 45.0°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: 13:08
May 22, friday
1500
63°F
E
9 mph
9 mph
1800
57°F
NE
9 mph
9 mph
2100
46°F
NE
6 mph
6 mph
May 23, saturday
0000
45°F
SE
4 mph
4 mph
0300
43°F
SE
4 mph
4 mph
0600
43°F
SE
5 mph
5 mph
0900
50°F
S
12 mph
12 mph
1200
55°F
S
11 mph
11 mph
