Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The average high-temperature shows a slight dip in September, from August's moderately hot 25.3°C (77.5°F) to an agreeable 20.6°C (69.1°F). In September, Retschwiller experiences an average nighttime temperature of 10.4°C (50.7°F).Humidity
In Retschwiller, the average relative humidity in September is 76%.Rainfall
In Retschwiller, in September, during 9.9 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Retschwiller, during the entire year, the rain falls for 142.1 days and collects up to 376mm (14.8") of precipitation.Snowfall
In Retschwiller, snow does not fall in April through September.Daylight
In September, the average length of the day in Retschwiller is 12h and 35min.On the first day of the month, sunrise is at 06:45 and sunset at 20:10. On the last day of September, in Retschwiller, sunrise is at 07:27 and sunset at 19:09 CEST.
Sunshine
The average sunshine in September is 8.5h.UV index
In Retschwiller, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Retschwiller?
What is the average humidity in September in Retschwiller?
How much does it rain in Retschwiller in September?
When it does not snow in Retschwiller?
Does it snow in Retschwiller in September?
How many hours of daylight does Retschwiller have in September?
What time are sunrise and sunset in September in Retschwiller?
How many hours of sunshine does Retschwiller have in September?
What is the UV index reading in September in Retschwiller?
Average temperature in September
Retschwiller, France
- Average high temperature in September: 20.6°C
The warmest months (with the highest average high temperature) are July and August (25.3°C).
The month with the lowest average high temperature is January (4.1°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (-0.6°C).
Average pressure in September
Retschwiller, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is November (1015.1mbar).
Average wind speed in September
Retschwiller, France
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).
Average humidity in September
Retschwiller, France
- Average humidity in September: 76%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in September
Retschwiller, France
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is May (47mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Retschwiller, France
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (15.1 days).
The months with the least rainy days are February and September (9.9 days).
Average snowfall in September
Retschwiller, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (50mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Retschwiller, 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 May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Retschwiller, France
- Average daylight in September: 12h and 4min
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 18min).
- Average sunshine in September: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Retschwiller, France
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is December (13.5 days).
Average UV index in September
Retschwiller, France
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Retschwiller, France
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Retschwiller, 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).
