Average sea water temperature in December:
+45.9°F
| Minimum sea water temperature in December: | 49.6°F |
| Maximum sea water temperature in December: | 40.5°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 44.9°F. The highest and lowest sea temperatures during the month were 47.7°F and 42.3°F.
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Monthly sea water temperature in Saint John, °F
Which Canada resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Tofino | 49.5°F | 48.7°F |
| Victoria | 48.7°F | 47.9°F |
| Surrey | 47.3°F | 46.3°F |
| Nanaimo | 47.2°F | 46.7°F |
| North Vancouver | 46.4°F | 46.3°F |
| Vancouver | 46.4°F | 46.3°F |
| Saint John | 44.9°F | 44.5°F |
| Saint Andrews | 43.2°F | 43.5°F |
| Halifax | 41.9°F | 41.3°F |
| Montreal | 41.7°F | 40.0°F |
| Lunenburg | 41.1°F | 41.3°F |
| Kingston | 40.2°F | 43.2°F |
| Niagara-on-the-Lake | 40.0°F | 42.9°F |
| Sydney | 39.5°F | 40.4°F |
| Hamilton | 39.3°F | 42.2°F |
| Barrie | 39.3°F | 40.7°F |
| Mississauga | 39.2°F | 41.9°F |
| Toronto | 39.2°F | 41.6°F |
| Corner Brook | 38.4°F | 36.3°F |
| Oshawa | 38.4°F | 39.7°F |
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: 08:47
December 29, monday
0900
27°F
NW
3 mph
3 mph
1200
32°F
NW
9 mph
9 mph
1500
36°F
W
16 mph
16 mph
1800
37°F
NW
16 mph
16 mph
2100
39°F
NW
17 mph
17 mph
December 30, tuesday
0000
41°F
N
14 mph
14 mph
0300
41°F
NE
17 mph
17 mph
0600
37°F
NE
20 mph
20 mph
