Lake Constance weather in September
Mild and comfortable, with some rainy days. Average highs of 20°C and lows of 13°C, with around 11 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
13°C
Rainy days
11 days
Best months to visit
July
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 centre of Lake Constance
Taste local cuisine at traditional restaurants
Visit cultural museums and heritage sites
Walk scenic trails around Lake Constance
Shop at local markets and artisan stores
Enjoy sunset views from elevated viewpoints
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.
Recommended
July
25C
Warm and pleasant, with some rainy days.
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.
