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Best time to visit Hamilton
Data source：Meteostat
Last updated：2025-09
Weather in Hamilton throughout the year
- 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.
Weather in Hamilton
Annual average temperature: approx. 9.8°C / Annual rainfall: approx. 852 mm / Summer humidity: 65%–75% / Rainiest month: July
Hamilton weather by month
Month
Temperature (°C)
Rainfall (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
7-day weather forecast for Hamilton
10/30
Friday
Sunny
15.2°C/7.9°C
10/31
Saturday
Sunny
14.3°C/5.2°C
11/1
Sunday
Overcast
15.4°C/6.8°C
11/2
Monday
Overcast
18.1°C/9.6°C
11/3
Tuesday
Overcast
17.3°C/12.7°C
11/4
Wednesday
Overcast
18.3°C/13.8°C
11/5
Thursday
Patchy light drizzle
16.4°C/13.4°C
