Measurements:
°C
°F
Hamilton
18°F
NE 9 mph
Feels like: 8°F
Precip: 0%
World Resorts Canada Hamilton Weather

Hamilton Sea Water Temperature

Current Sea Water Temperature:
+32.4°F
Maximum Sea Water Temperature in February: 37.2°F
Minimum Sea Water Temperature in February: 32.4°F
Average water temperature in February: 34.8°F

Sea Water Temperature for the Last 10 Days:

February 05 32.4°F January 31 33.6°F
February 04 32.6°F January 30 33.8°F
February 03 32.6°F January 29 33.4°F
February 02 33.0°F January 28 34.4°F
February 01 33.6°F January 27 34.4°F

When is the Warmest Sea for Hamilton?

According to our data for the last three years for Hamilton the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Hamilton was 76.5°F. The maximum and minimum values were 72.0°F and 79.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Hamilton was 72.9°F. The maximum and minimum values were 64.8°F and 78.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Hamilton was 68.1°F. The maximum and minimum values were 61.6°F and 72.4°F respectively.

Best Time to Visit Hamilton
The most sunny months:
September 15 days
August 14 days
July 13 days
The most warm months:
July 82.3 °F
August 80.7 °F
June 75.6 °F
Warmest sea temperature:
August 73.7 °F
July 71.3 °F
September 69.7 °F
The most cold months:
January 26.4 °F
February 27.7 °F
December 33.8 °F
The most rainy months:
April 3 days
July 2 days
June 2 days
The most windy months:
December 11 mph
November 11 mph
February 10 mph

Hamilton on the Weather Map

Canada Resorts:
NAME
Halifax +24
Moncton +18
Montreal +14
Niagara Falls +14
Ottawa +14
Prince Edward Island +20
Quebec +8
Saint John +20
St. John's +16
Sydney +28
Toronto +18
Vancouver +52
Victoria +54
Winnipeg +40
Yellowknife -10
24 Hours Weather Forecast
Hamilton
Local time: 16:49
05 feb, thursday
1800 18°F
NE
9 mph
2100 14°F
NE
8 mph
06 feb, friday
0000 12°F
NE
9 mph
0300 14°F
N
9 mph
0600 14°F
N
10 mph
0900 16°F
NE
9 mph
1200 20°F
NE
9 mph
1500 24°F
NE
7 mph