17.10
sat
sat
Day
46°F
SE 14 mph
Precip.
14%
14%
Night
30°F
SE 6 mph
Precip.
14%
14%
18.10
sun
sun
Day
45°F
E 8 mph
Precip.
1%
1%
Night
41°F
N 4 mph
Precip.
9%
9%
19.10
mon
mon
Day
50°F
N 12 mph
Precip.
17%
17%
Night
45°F
SW 1 mph
Precip.
27%
27%
20.10
tue
tue
Day
54°F
S 11 mph
Precip.
10%
10%
Night
41°F
S 8 mph
Precip.
28%
28%
21.10
wed
wed
Day
48°F
SW 12 mph
Precip.
15%
15%
Night
39°F
SW 8 mph
Precip.
29%
29%
22.10
thu
thu
Day
48°F
SW 6 mph
Precip.
24%
24%
Night
43°F
S 15 mph
Precip.
8%
8%
23.10
fri
fri
Day
48°F
S 14 mph
Precip.
3%
3%
Night
37°F
S 11 mph
Precip.
5%
5%
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 October, °F
Show year:
2026
2025
2024
The average sea water temperature in October of 2026 was 54.9°F. The highest and lowest sea temperatures during the month were 58.5°F and 53.1°F.
Sea water temperature in November, °F
Show year:
2025
2024
2023
The average sea water temperature in November of 2025 was 49.9°F. The highest and lowest sea temperatures during the month were 53.8°F and 47.1°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: 18:38
October 17, saturday
2100
37°F
SE
11 mph
11 mph
October 18, sunday
0000
30°F
SE
6 mph
6 mph
0300
30°F
SE
5 mph
5 mph
0600
30°F
SE
4 mph
4 mph
0900
36°F
E
5 mph
5 mph
1200
45°F
E
8 mph
8 mph
1500
48°F
NE
10 mph
10 mph
1800
45°F
NE
8 mph
8 mph
