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Mainz Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Mainz year round climate
- Spring (March–May): Average 7.7–15.7°C, mild climate with occasional showers, increasing sunshine hours. Popular activities: Walking along the Rhine River, visiting Mainz Cathedral. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
- Summer (June–August): Average 19.7–21.3°C, warm and humid climate with occasional thunderstorms. Popular activities: Outdoor picnics, cycling, visiting museums. Recommended clothing: Light and breathable clothing, sun hat, sunglasses.
- Autumn (September–November): Average 16.6–6.9°C, cool climate with higher rainfall and variable weather. Popular activities: Tasting local wines, visiting castles, enjoying autumn scenery. Recommended clothing: Warm jacket, comfortable trousers, rain gear.
- Winter (December–February): Average 3.3–5.9°C, cold climate with occasional snowfall and shorter daylight hours. Popular activities: Indoor museum visits, enjoying hot drinks, Christmas markets (December). Recommended clothing: Warm clothing, thick coat, scarf, gloves, hat.
Mainz climatological average
Annual average temperature: approx. 12°C / Annual rainfall: approx. 663 mm / Summer humidity: 65%–75% / Rainiest month: October
Mainz monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
3.3°C
56.5
February
5.9°C
39.3
March
7.7°C
55.6
April
9.7°C
44.4
May
15.7°C
57.1
June
19.7°C
38.6
July
20.9°C
61.8
August
21.3°C
45.8
September
16.6°C
76.8
October
12.8°C
77.5
November
6.9°C
68.3
December
3.6°C
41.9
Mainz weather for the next seven days
11/20
Thursday
Patchy rain nearby
3.9°C/0.5°C
11/21
Friday
Cloudy
3.8°C/-1°C
11/22
Saturday
Sunny
2.8°C/-2°C
11/23
Sunday
Partly Cloudy
2.5°C/-2.3°C
11/24
Monday
Patchy rain nearby
4.1°C/-0.5°C
11/25
Tuesday
Patchy rain nearby
4.8°C/2.8°C
11/26
Wednesday
Overcast
3.4°C/0.8°C
