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
1/30
Friday
Partly Cloudy
41.7°F/32.9°F
1/31
Saturday
Patchy rain nearby
45.5°F/34.4°F
2/1
Sunday
Patchy rain nearby
44.1°F/33.8°F
2/2
Monday
Partly Cloudy
43.5°F/35.8°F
2/3
Tuesday
Overcast
47.5°F/34.9°F
2/4
Wednesday
Partly Cloudy
44.9°F/35.2°F
2/5
Thursday
Cloudy
46.1°F/37°F
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