In Konstanz, the climate is warm and temperate. The rainfall in Konstanz is significant, with precipitation even during the driest month. Though inland, being at the shores of Constance Lake (Bodensee) gives the city pleasant summers. The winters are chilly, but not too cold.
Spring: (March – May): Temperatures start out with average lows of about 5 degrees Celsius in March but go up to as high as 20 degrees Celsius in May. It starts to get pleasant and is a good time to see the blooming flowers and the city wake up from the winter sleep.
Summer: (June – August): The best months for a good weather in Konstanz are June, July, August and September. Summer temperatures hold between 19-26 degrees Celsius. Between the months of June and September, the climate is beautiful. In average, in the morning it is 10 degrees Celsius. This is the best time to visit.
Autumn: (September – October): Summer temperatures hold between 10-20 degrees Celsius. The temperature is pleasant with a daily mean of around 16 degrees Celsius and little rainfall of about 103 mm.
Winter: (November – February): The months of November and December are very unfavourable as the temperature trend is downwards and it keeps getting colder. One can also experience heavy rainfall in these months between 82 – 180mm. Between January and March, the climate is the worst possible. Temperatures may sometimes go below zero usually fluctuating between -2 to 5 degrees Celsius. February is also the coldest month of the year.
The best time to visit Konstanz would be in the months of June, July, August and September (summer months and beginning autumn). The temperatures are comfortably warm with low precipitations and clear visibility, allowing you to have an unhindered experience of the city.