Measurements:
°C
°F
CURRENT WEATHER
20:34
Hamilton
66°F
NE 4 mph
Feels like: 66°F
Precip: 18%
World Resorts Canada Hamilton Weather

7 Day Weather Forecast

09.28
mon
DAY
60°F
SW 4 mph
precip
24%
NIGHT
66°F
SE 4 mph
precip
19%
09.29
tue
DAY
66°F
W 7 mph
precip
14%
NIGHT
64°F
NE 6 mph
precip
23%
09.30
wed
DAY
68°F
N 10 mph
precip
20%
NIGHT
68°F
N 2 mph
precip
20%
10.01
thu
DAY
78°F
NE 14 mph
precip
8%
NIGHT
68°F
E 6 mph
precip
75%
10.02
fri
DAY
60°F
SE 7 mph
precip
15%
NIGHT
50°F
SE 11 mph
precip
4%
10.03
sat
DAY
56°F
SW 5 mph
precip
2%
NIGHT
54°F
W 7 mph
precip
12%
10.04
sun
DAY
56°F
N 9 mph
precip
48%
NIGHT
60°F
NE 13 mph
precip
83%

Hamilton Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Hamilton was 19.6°F. The maximum and minimum values were 17.8°F and 20.8°F respectively.

Hamilton on the Weather Map

Best Time to Visit Hamilton
The most sunny months:
July 15 days
August 14 days
June 13 days
The most warm months:
July 83.2 °F
August 81.2 °F
June 76.2 °F
Warmest sea temperature:
August 73.5 °F
July 71.0 °F
September 69.6 °F
The most cold months:
January 26.4 °F
February 27.6 °F
December 33.8 °F
The most rainy months:
April 2 days
July 2 days
June 2 days
The most windy months:
December 11 mph
November 11 mph
January 10 mph
more details