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Hamilton Weather and climate
Data source：Meteostat
Update date：2025-09
Hamilton year round climate
- Spring (March–May): Average 2.4–14.1°C, climate transitioning from cold to warm, moderate rainfall. Common activities: Late maple leaf viewing, outdoor walks. Suggested clothing: Warm jacket, sweater, long pants.
- Summer (June–August): Average 18.8–21.7°C, warm and humid climate, most rainfall in July. Common activities: Outdoor picnics, hiking, water activities. Suggested clothing: Light and breathable clothing, rain gear.
- Autumn (September–November): Average 17.7–5.6°C, climate transitioning from mild to cool, decreased rainfall. Common activities: Maple leaf viewing, fruit picking. Suggested clothing: Jacket, comfortable long pants.
- Winter (December–February): Average -3.0–1.2°C, cold climate, low probability of snowfall, moderate rainfall. Common activities: Indoor activities, skiing (requires travel to other areas). Suggested clothing: Heavy coat, warm clothing, hat, gloves, scarf.
Hamilton climatological average
Annual average temperature: approx. 9.8°C / Annual rainfall: approx. 852 mm / Summer humidity: 65%–75% / Rainiest month: July
Hamilton monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-3°C
75.2
February
-1°C
67.5
March
2.4°C
77.3
April
7.9°C
78
May
14.1°C
57
June
18.8°C
79.3
July
21.7°C
131.8
August
20.7°C
86.8
September
17.7°C
36.3
October
11.1°C
43.6
November
5.6°C
44.1
December
1.2°C
75.5
Hamilton weather for the next seven days
10/16
Thursday
Sunny
17.4°C/4.9°C
10/17
Friday
Moderate rain
10.5°C/6.6°C
10/18
Saturday
Patchy rain nearby
24.2°C/11°C
10/19
Sunday
Heavy rain
22°C/10.6°C
10/20
Monday
Patchy rain nearby
13.1°C/9.3°C
10/21
Tuesday
Sunny
19.1°C/6.8°C
10/22
Wednesday
Patchy rain nearby
15.9°C/11.1°C
