August is the hottest month in Bonn with an average temperature of 18°C (64°F) and the coldest is January at 3°C (36°F) with the most daily sunshine hours at 7 in May. The wettest month is June with an average of 91.2mm of rain..
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Sunrise 08:33
Sunset 16:31
Sunrise 08:33
Sunset 16:31