Current sea water temperature:
+37.9°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: | 40.9°F |
| more information | |
14 days
forecast
forecast
| Hamilton |
monthly
weather
weather
| Hamilton |
Sea water temperature for the last 10 days:
| December 28 | 37.9°F | December 23 | 38.8°F |
| December 27 | 38.3°F | December 22 | 39.2°F |
| December 26 | 38.7°F | December 21 | 38.8°F |
| December 25 | 38.7°F | December 20 | 38.8°F |
| December 24 | 38.5°F | December 19 | 38.7°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
January
January
| Hamilton |
Best time for vacation in Hamilton
Hamilton on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Hamilton
Local time: 01:43
December 29, monday
0300
54°F
NE
16 mph
16 mph
0600
46°F
NE
25 mph
25 mph
0900
32°F
NE
29 mph
29 mph
1200
28°F
NE
34 mph
34 mph
1500
28°F
E
27 mph
27 mph
1800
27°F
E
25 mph
25 mph
2100
25°F
E
23 mph
23 mph
December 30, tuesday
0000
23°F
SE
23 mph
23 mph
