21.12
sun
sun
Day
43°F
NE 17 mph
Precip.
100%
100%
Night
28°F
SE 12 mph
Precip.
0%
0%
22.12
mon
mon
Day
23°F
SE 16 mph
Precip.
0%
0%
Night
18°F
SE 11 mph
Precip.
0%
0%
23.12
tue
tue
Day
28°F
E 4 mph
Precip.
100%
100%
Night
23°F
SW 9 mph
Precip.
0%
0%
24.12
wed
wed
Day
23°F
S 9 mph
Precip.
0%
0%
Night
21°F
E 3 mph
Precip.
0%
0%
25.12
thu
thu
Day
32°F
E 9 mph
Precip.
55%
55%
Night
28°F
SE 5 mph
Precip.
0%
0%
26.12
fri
fri
Day
36°F
N 16 mph
Precip.
22%
22%
Night
41°F
E 20 mph
Precip.
41%
41%
27.12
sat
sat
Day
19°F
SE 16 mph
Precip.
0%
0%
Night
18°F
SE 6 mph
Precip.
0%
0%
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 December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 45.6°F. The highest and lowest sea temperatures during the month were 47.7°F and 43.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 39.8°F. The highest and lowest sea temperatures during the month were 41.9°F and 38.3°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: 21:57
December 22, monday
0000
28°F
SE
12 mph
12 mph
0300
25°F
SE
12 mph
12 mph
0600
21°F
SE
14 mph
14 mph
0900
21°F
SE
15 mph
15 mph
1200
23°F
SE
16 mph
16 mph
1500
23°F
SE
16 mph
16 mph
1800
19°F
SE
14 mph
14 mph
2100
18°F
SE
14 mph
14 mph
