September weather forecastStrasbourg, France
September
Weather in September
With the onset of September, Strasbourg begins its transition into the autumn season. The temperatures start to experience a significant drop from August, signaling the end of the warm summer days. The drop in rainfall quantity to 26mm (1.02") and a rise in pressure contribute to the pleasant early autumn weather. Extended daylight hours combined with reduced humidity offer a comfortable environment for outdoor endeavors. Despite the changing temperatures, sunshine hours remain optimal, leading to beautiful, crisp fall days.Temperature
With the arrival of September, Strasbourg notices a mild change in the average high-temperature, sliding from August's warm 24.9°C (76.8°F) to an agreeable 20.5°C (68.9°F). During September, Strasbourg records an average temperature of 10°C (50°F) at night.Humidity
In September, the average relative humidity is 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.5 days and typically collects 26mm (1.02") of precipitation.Snowfall
April through September are months without snowfall.Daylight
In Strasbourg, the average length of the day in September is 12h and 35min.On the first day of September, sunrise is at 06:46 and sunset at 20:10. On the last day of the month, sunrise is at 07:27 and sunset at 19:09 CEST.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Strasbourg, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Strasbourg, France
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is August (24.9°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-0.7°C).
Average pressure in September
Strasbourg, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1019.8mbar).
The month with the lowest atmospheric pressure is November (1015.2mbar).
Average wind speed in September
Strasbourg, France
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is February (11km/h).
The calmest month (with the lowest average wind speed) is August (7.4km/h).
Average humidity in September
Strasbourg, France
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are April, July and August (73%).
Average rainfall in September
Strasbourg, France
- Average rainfall in September: 26mm
The wettest months (with the highest rainfall) are June and July (56mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Strasbourg, France
- Average rainfall days in September: 10.5 days
The months with the highest number of rainy days are May and July (17.1 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in September
Strasbourg, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (40mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Strasbourg, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Strasbourg, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Strasbourg, France
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Strasbourg, France
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Strasbourg, France
- Average cloud cover in September: 33
The months with the most cloud cover are January and December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Strasbourg, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and December (8km).
