13.09
sun
sun
Day
63°F
NE 12 mph
Precip.
20%
20%
Night
57°F
NW 3 mph
Precip.
46%
46%
14.09
mon
mon
Day
63°F
SE 8 mph
Precip.
70%
70%
Night
52°F
SE 9 mph
Precip.
6%
6%
15.09
tue
tue
Day
61°F
SW 2 mph
Precip.
2%
2%
Night
50°F
NE 3 mph
Precip.
22%
22%
16.09
wed
wed
Day
59°F
NE 9 mph
Precip.
18%
18%
Night
55°F
NE 7 mph
Precip.
26%
26%
17.09
thu
thu
Day
61°F
W 6 mph
Precip.
22%
22%
Night
55°F
SW 4 mph
Precip.
49%
49%
18.09
fri
fri
Day
61°F
S 7 mph
Precip.
5%
5%
Night
48°F
SE 6 mph
Precip.
6%
6%
19.09
sat
sat
Day
61°F
NE 3 mph
Precip.
2%
2%
Night
50°F
NE 6 mph
Precip.
27%
27%
20.09
sun
sun
Day
54°F
N 15 mph
Precip.
80%
80%
Night
54°F
E 7 mph
Precip.
43%
43%
21.09
mon
mon
Day
54°F
SE 15 mph
Precip.
12%
12%
Night
45°F
SE 11 mph
Precip.
9%
9%
22.09
tue
tue
Day
54°F
S 7 mph
Precip.
2%
2%
Night
43°F
S 4 mph
Precip.
17%
17%
23.09
wed
wed
Day
57°F
NE 4 mph
Precip.
11%
11%
Night
50°F
W 5 mph
Precip.
18%
18%
24.09
thu
thu
Day
52°F
W 16 mph
Precip.
83%
83%
Night
52°F
S 11 mph
Precip.
35%
35%
25.09
fri
fri
Day
59°F
S 5 mph
Precip.
17%
17%
Night
50°F
S 6 mph
Precip.
30%
30%
26.09
sat
sat
Day
55°F
S 6 mph
Precip.
2%
2%
Night
46°F
S 5 mph
Precip.
4%
4%
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 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.
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: 15:32
September 13, sunday
1800
57°F
NE
8 mph
8 mph
2100
55°F
N
6 mph
6 mph
September 14, monday
0000
57°F
NW
3 mph
3 mph
0300
57°F
W
4 mph
4 mph
0600
59°F
W
2 mph
2 mph
0900
59°F
NE
5 mph
5 mph
1200
63°F
SE
8 mph
8 mph
1500
64°F
SE
12 mph
12 mph
