Lake Constance weather in September
Mild and comfortable, with some rainy days. Average highs of 20°C and lows of 12°C, with around 12 rainy days expected throughout the month.
While September isn't our top-rated month for Lake Constance, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
20°C
Average low
12°C
Rainy days
12 days
Best months to visit
Year-round
What to do in Lake Constance in September
Whatever the weather, Lake Constance rewards curious visitors. Here are some of the best ways to spend your time:
Explore the historic architecture and cultural heritage of Lake Constance
Hike scenic trails through surrounding natural areas
Experience local cuisine at traditional restaurants and markets
Photograph stunning vistas and charming town scenery
Connect with locals and learn regional customs and traditions
Relax in cafés and embrace the slower pace of life
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
4C
Cold, with some rainy days.
February
6C
Cold, with some rainy days.
March
10C
Cool, with some rainy days.
April
15C
Cool, with some rainy days.
May
18C
Mild and comfortable, with regular rainfall.
June
23C
Mild and comfortable, with some rainy days.
July
25C
Warm and pleasant, with regular rainfall.
August
24C
Mild and comfortable, with some rainy days.
September (you are here)
20C
Mild and comfortable, with some rainy days.
October
15C
Cool, with some rainy days.
November
9C
Cold, with some rainy days.
December
5C
Cold, with some rainy days.
Book your September trip to Lake Constance
Find hotels, tours and experiences for the perfect escape.
