Current sea water temperature:
+39.0°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: | 41.1°F |
| more information | |
14 days
forecast
forecast
| Hamilton |
monthly
weather
weather
| Hamilton |
Sea water temperature for the last 10 days:
| December 17 | 39.0°F | December 12 | 39.0°F |
| December 16 | 38.8°F | December 11 | 39.0°F |
| December 15 | 39.2°F | December 10 | 39.0°F |
| December 14 | 39.0°F | December 9 | 39.6°F |
| December 13 | 39.2°F | December 8 | 40.1°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: 17:40
December 17, wednesday
1800
36°F
E
10 mph
10 mph
2100
34°F
NE
6 mph
6 mph
December 18, thursday
0000
32°F
NE
4 mph
4 mph
0300
34°F
N
9 mph
9 mph
0600
36°F
NE
13 mph
13 mph
0900
37°F
N
12 mph
12 mph
1200
41°F
N
14 mph
14 mph
1500
41°F
N
16 mph
16 mph
