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
With the arrival of September, Heidwiller notices a mild change in the average high-temperature, sliding from August's warm 24.1°C (75.4°F) to an enjoyable 19.9°C (67.8°F). During the month of September, the temperature in Heidwiller, France, falls to an average of 9.6°C (49.3°F).Humidity
In Heidwiller, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall in Heidwiller is September, when the rain falls for 12.4 days and typically collects 33mm (1.3") of precipitation.Snowfall
April through September are months without snowfall.Daylight
The average length of the day in September in Heidwiller is 12h and 34min.On the first day of the month, sunrise is at 06:50 and sunset at 20:11. On the last day of September, sunrise is at 07:29 and sunset at 19:12 CEST.
Sunshine
The average sunshine in September in Heidwiller, France, is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Heidwiller?
What is the average humidity in September in Heidwiller?
What is the driest month in Heidwiller?
How much does it rain in Heidwiller in September?
When it does not snow in Heidwiller?
Does it snow in Heidwiller in September?
What is the average length of the day in September in Heidwiller?
What time are sunrise and sunset in September in Heidwiller?
How many hours of sunshine does Heidwiller have in September?
How high is the UV index in September in Heidwiller?
Average temperature in September
Heidwiller, France
- Average high temperature in September: 19.9°C
The warmest month (with the highest average high temperature) is August (24.1°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (-1.7°C).
Average pressure in September
Heidwiller, France
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is November (1015.6mbar).
Average wind speed in September
Heidwiller, France
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is February (10.1km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity in September
Heidwiller, France
- 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 August (76%).
Average rainfall in September
Heidwiller, France
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is June (82mm).
The driest month (with the least rainfall) is September (33mm).
Average rainfall days in September
Heidwiller, France
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is October (12.2 days).
Average snowfall in September
Heidwiller, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (60mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Heidwiller, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 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
Heidwiller, France
- Average daylight in September: 12h and 4min
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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Heidwiller, France
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is May (7.5 days).
Average UV index in September
Heidwiller, France
- 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, November and December (UV index 2).
Average cloud cover in September
Heidwiller, France
- Average cloud cover in September: 34
The months with the most cloud cover are January and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Heidwiller, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July, August and October (9km).
The months with the lowest visibility are January, February, September, November and December (8km).
