The weather in Bonn just like other Germany cities various and unstable and at times, it can be really fickle. Majority of tourist visit Bonn especially during the months of May and September, as this is the only time the climate is more stable and the days get more sunlight.The summer season sees to many cafes and beer areas getting filled up quickly. At the same time, many people make use of the summer season to carry out various outdoor activities and events in and around the Bonn area. Even then, the brightest day can suddenly and without warning change to a rainy and damp day.
The most important thing that one needs to be aware oft while in Bonn is that the area general weather changes abruptly, but remains almost constant throughout the year with slight changes in every month. The Bonn area experiences about four seasons. January is Bonn’s coldest month with lows of about 3 degrees Celsius and highs 10 degrees Celsius. The hottest month is August, with highs of about 25 degrees Celsius and lows of 14 degrees Celsius. Winter season sees the snowy weather at the best and more damp days throughout the season. The Bonn area is most busy at around August when the area receives spells of sun shine. You may be interested to note that the temperatures in Bonn area increase steadily from January to August and then start dropping again from September onwards.