September weather forecastKonstanz, Germany
September
Weather in September
September arrives with subtle hints of the upcoming autumn season. Gradually receding temperatures make weather more comfortable for outdoor ventures. The precipitation decreases to 36mm (1.42"), marking the end of the summer's peak rainfall phase. As leaves start to color and fall, the city begins to transform into a romantic autumn landscape. The enchanting sunset over Lake Constance is a sight not to be missed.Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a moderately hot 23.4°C (74.1°F) to a refreshing 18.9°C (66°F). Konstanz's nights in September cool down to an average low-temperature of 9°C (48.2°F).Humidity
In Konstanz, the average relative humidity in September is 79%.Rainfall
In Konstanz, in September, it is raining for 12.5 days, with typically 36mm (1.42") of accumulated precipitation. Throughout the year, there are 161.9 rainfall days, and 588mm (23.15") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Konstanz.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:42 and sunset at 20:03. On the last day of September, sunrise is at 07:21 and sunset at 19:04 CEST.
Sunshine
In Konstanz, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index in Konstanz is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Konstanz, Germany
- Average high temperature in September: 18.9°C
The warmest months (with the highest average high temperature) are July and August (23.4°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in September: 9°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (-2.7°C).
Average pressure in September
Konstanz, Germany
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Konstanz, Germany
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is March (10km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).
Average humidity in September
Konstanz, Germany
- Average humidity in September: 79%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in September
Konstanz, Germany
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is August (80mm).
The driest month (with the least rainfall) is November (30mm).
Average rainfall days in September
Konstanz, Germany
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Konstanz, Germany
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (96mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Konstanz, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Konstanz, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Konstanz, Germany
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in September
Konstanz, Germany
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Konstanz, Germany
- Average cloud cover in September: 35
The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Konstanz, Germany
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July, August and November (9km).
The months with the lowest visibility are January, February, September, October and December (8km).
