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📊 Monthly Climate Overview
| Month | Max °C | Min °C | Rain mm | Rain Days | Sun h | Wind km/h | Sea °C |
|---|---|---|---|---|---|---|---|
| Jan | 4°C | -1.2°C | 85.3 mm | 14 | 5.0 h | 16.2 km/h | 4°C |
| Feb | 6.4°C | -0.7°C | 61.5 mm | 12 | 6.5 h | 16.9 km/h | 4°C |
| Mar | 10.2°C | 1.8°C | 60.2 mm | 12 | 8.5 h | 16.4 km/h | 5°C |
| Apr | 14.5°C | 5.8°C | 85.5 mm | 12 | 10.1 h | 15.3 km/h | 8°C |
| May | 18°C | 10.1°C | 124.7 mm | 16 | 10.5 h | 15.2 km/h | 13°C |
| Jun | 23.4°C | 15.1°C | 113.9 mm | 14 | 12.1 h | 14.3 km/h | 17°C |
| Jul | 24.9°C | 16.5°C | 129.7 mm | 14 | 12.0 h | 14.1 km/h | 20°C |
| Aug | 24.2°C | 16.3°C | 128.6 mm | 14 | 10.8 h | 13.3 km/h | 20°C |
| Sep | 19.9°C | 12.6°C | 80.5 mm | 12 | 9.8 h | 12.5 km/h | 17°C |
| Oct | 15°C | 8.2°C | 81.3 mm | 12 | 7.3 h | 12.6 km/h | 13°C |
| Nov | 8.6°C | 3.5°C | 81.6 mm | 13 | 5.0 h | 13.6 km/h | 9°C |
| Dec | 5.2°C | 0.3°C | 85.4 mm | 14 | 4.4 h | 14.3 km/h | 6°C |
🌊 Water temperatures are based on multi-year averages from public tourism and weather sources. Actual values can vary by ±2 °C depending on conditions.
📖Climate & Best Time to Visit Lake Constance
Lake Constance (Germany) has a temperate climate with an annual average of around 11 °C. Daytime highs average 15 °C, while nights cool to about 7 °C. The destination sees roughly 1118 mm of rainfall per year and 8.5 hours of sunshine per day on average.
Three-country lake between Germany, Austria and Switzerland — the flower island of Mainau, the historic Reichenau Island (UNESCO) and the lakeside dwellings museum at Unteruhldingen.
Best swimming season runs from early summer into September: in July water reaches its warmest point around 20 °C, while air temperatures climb up to 24.9 °C in July.
Note: with roughly 26 °C between the hottest and coldest month, picking the right time of year matters a lot here.
🎟️ Top activities in Lake Constance
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Frequently asked questions about Lake Constance
When is the best time to visit Lake Constance?
The best time to visit Lake Constance: June to September – best in July (avg. 20.7 °C, 14 rainy days). Based on the monthly values for 2014 to 2023.
What are the temperatures in Lake Constance?
The warmest month is July with an average of 20.7 °C and daytime highs around 24.9 °C. The coldest month is January with an average of 1.4 °C and night-time lows around -1.2 °C.
How many rainy days does Lake Constance have?
May has the most rainy days with 16 rainy days. The driest month is February with 12 rainy days.