Average sea water temperature in December:
+40.1°F
| Minimum sea water temperature in December: | 45.5°F |
| Maximum sea water temperature in December: | 36.5°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 39.5°F. The highest and lowest sea temperatures during the month were 43.9°F and 36.5°F.
Monthly sea water temperature in Sydney, °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 Sydney
Sydney on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Sydney
Local time: 08:47
December 29, monday
0900
27°F
SE
7 mph
7 mph
1200
30°F
SE
6 mph
6 mph
1500
30°F
SE
4 mph
4 mph
1800
30°F
SW
4 mph
4 mph
2100
28°F
SW
4 mph
4 mph
December 30, tuesday
0000
30°F
NW
6 mph
6 mph
0300
32°F
NW
11 mph
11 mph
0600
36°F
NW
17 mph
17 mph
