Spring (March–May): Average 45–57°F, mild and rainy climate with occasional showers. May is the rainiest month. Common activities: Visiting the University of Bonn, strolling along the Rhine River. Suggested clothing: Light jacket, comfortable trousers or skirt, umbrella.
Summer (June–August): Average 63–66°F, warm and humid climate with occasional thunderstorms. Common activities: Cycling along the Rhine River, enjoying outdoor cafes. Suggested clothing: Light and breathable clothing, sun hat.
Autumn (September–November): Average 61–45°F, cool climate with frequent rainfall and gradually decreasing temperatures. Common activities: Visiting Bonn's museums, strolling in parks. Suggested clothing: Warm jacket, comfortable trousers.
Winter (December–February): Average 40–42°F, cold and humid climate with frequent rain and snow. Common activities: Visiting Bonn's indoor attractions, enjoying hot drinks. Suggested clothing: Heavy coat, warm clothing, scarf and gloves.
Bonn climatological average
Annual average temperature: approx. 52.5°F / Annual rainfall: approx. 970 mm / Summer humidity: 65%–75% / Rainiest month: May
Bonn monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
38.5°F
79.3
February
43°F
87
March
45.9°F
81.3
April
48.4°F
58.7
May
57.2°F
99
June
63.3°F
79
July
65.5°F
80.3
August
66.9°F
69.7
September
61.2°F
86.3
October
55.9°F
74.3
November
45.5°F
84.7
December
40.3°F
91.3
Bonn weather for the next seven days
12/15
Monday
Sunny
49°F/38.1°F
12/16
Tuesday
Cloudy
47.9°F/40.9°F
12/17
Wednesday
Cloudy
50.4°F/39°F
12/18
Thursday
Partly Cloudy
52.2°F/42.4°F
12/19
Friday
Patchy rain nearby
49.1°F/40.8°F
12/20
Saturday
Sunny
47.8°F/39.2°F
12/21
Sunday
Partly Cloudy
45.1°F/36.5°F
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