Current sea water temperature:
+38.8°F
| Minimum sea water temperature in December: | 46.8°F |
| Maximum sea water temperature in December: | 37.8°F |
| Average sea water temperature in December: | 41.0°F |
| more information | |
14 days
forecast
forecast
| Hamilton |
monthly
weather
weather
| Hamilton |
Sea water temperature for the last 10 days:
| December 20 | 38.8°F | December 15 | 39.2°F |
| December 19 | 38.7°F | December 14 | 39.0°F |
| December 18 | 39.0°F | December 13 | 39.2°F |
| December 17 | 39.0°F | December 12 | 39.0°F |
| December 16 | 38.8°F | December 11 | 39.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Hamilton?
Based on the data about daily sea water temperature for the last three years the warmest sea in Hamilton was noticed in August, July and September.
Monthly Sea Temperatures in Hamilton, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.8°F. The highest and lowest sea temperatures during the month were 76.6°F and 69.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 70.6°F. The highest and lowest sea temperatures during the month were 75.6°F and 63.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 66.3°F. The highest and lowest sea temperatures during the month were 70.2°F and 60.4°F.
current
weather
weather
| Hamilton |
weather in
December
December
| Hamilton |
Best time for vacation in Hamilton
Hamilton on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Hamilton
Local time: 19:13
December 20, saturday
2100
36°F
NE
24 mph
24 mph
December 21, sunday
0000
36°F
E
21 mph
21 mph
0300
34°F
E
23 mph
23 mph
0600
30°F
E
21 mph
21 mph
0900
28°F
E
20 mph
20 mph
1200
28°F
E
18 mph
18 mph
1500
28°F
E
19 mph
19 mph
1800
25°F
E
18 mph
18 mph
