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Aargau
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Aargau Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Aargau year round climate
- Spring (March–May): Average 7.4–15°C, mild and rainy, gradually warming from March, with the most rainfall in May. Common activities: Hiking, cycling, visiting castles. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
- Summer (June–August): Average 19.3–20.7°C, warm and humid, sunny with occasional showers. Common activities: Outdoor swimming, water sports, visiting museums. Recommended clothing: Short-sleeved shirts, shorts, light and breathable clothing.
- Autumn (September–November): Average 15.7–6.3°C, cool and rainy, temperatures dropping significantly after October. Common activities: Leaf-peeping, trying local cuisine, visiting wineries. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
- Winter (December–February): Average 3.0–4.9°C, cold and humid, with occasional snowfall. Common activities: Skiing, indoor activities, enjoying hot drinks. Recommended clothing: Warm jacket, scarf, hat, gloves.
Aargau climatological average
Annual average temperature: approx. 11.5°C / Annual rainfall: approx. 1105 mm / Summer humidity: 65%–75% / Rainiest month: May
Aargau monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
2.4°C
63
February
4.9°C
46.3
March
7.4°C
82.3
April
9.4°C
87.3
May
15°C
127
June
19.3°C
97
July
20.7°C
95.7
August
20.7°C
99.7
September
15.7°C
107.7
October
12.7°C
78.7
November
6.3°C
118.3
December
3°C
102
Aargau weather for the next seven days
1/30
Friday
Patchy moderate snow
3.6°C/-1.5°C
1/31
Saturday
Cloudy
4.4°C/-0.6°C
2/1
Sunday
Overcast
4.9°C/0.1°C
2/2
Monday
Partly Cloudy
4.3°C/-2.3°C
2/3
Tuesday
Patchy rain nearby
6.1°C/-0.6°C
2/4
Wednesday
Partly Cloudy
4.5°C/1.1°C
2/5
Thursday
Partly Cloudy
6°C/1°C
