15.09
tue
tue
Day
70°F
N 13 mph
Precip.
11%
11%
Night
70°F
NE 9 mph
Precip.
5%
5%
16.09
wed
wed
Day
72°F
W 7 mph
Precip.
12%
12%
Night
66°F
S 6 mph
Precip.
8%
8%
17.09
thu
thu
Day
66°F
SW 4 mph
Precip.
15%
15%
Night
68°F
S 7 mph
Precip.
14%
14%
18.09
fri
fri
Day
64°F
SW 13 mph
Precip.
5%
5%
Night
61°F
W 11 mph
Precip.
10%
10%
19.09
sat
sat
Day
50°F
W 10 mph
Precip.
84%
84%
Night
59°F
SW 7 mph
Precip.
48%
48%
20.09
sun
sun
Day
59°F
SW 12 mph
Precip.
39%
39%
Night
61°F
W 8 mph
Precip.
23%
23%
21.09
mon
mon
Day
59°F
W 17 mph
Precip.
22%
22%
Night
59°F
W 16 mph
Precip.
33%
33%
sea water
temperature
temperature
| Hamilton |
monthly
weather
weather
| Hamilton |
current
weather
weather
| Hamilton |
14 days
forecast
forecast
| Hamilton |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 68.1°F. The highest and lowest sea temperatures during the month were 69.4°F and 67.1°F.
Air temperature in Hamilton, °F
Precipitation total in Hamilton, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Hamilton
Hamilton on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Hamilton
Local time: 13:50
September 15, tuesday
1500
75°F
NE
15 mph
15 mph
1800
73°F
NE
11 mph
11 mph
2100
70°F
NE
9 mph
9 mph
September 16, wednesday
0000
70°F
NE
9 mph
9 mph
0300
68°F
NE
8 mph
8 mph
0600
66°F
E
5 mph
5 mph
0900
68°F
S
5 mph
5 mph
1200
72°F
W
7 mph
7 mph
