September weather forecastHeidweiler, Germany
September
Weather in September
September, the first month of the autumn in Heidweiler, is still a refreshing month, with an average temperature varying between 18.5°C (65.3°F) and 8.8°C (47.8°F).Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a pleasant 22.8°C (73°F) in August to an enjoyable 18.5°C (65.3°F). In Heidweiler, the average temperature during the nights of September drops to a frosty 8.8°C (47.8°F).Humidity
The average relative humidity in September is 80%.Rainfall
In Heidweiler, in September, it is raining for 9.3 days, with typically 20mm (0.79") of accumulated precipitation. In Heidweiler, Germany, during the entire year, the rain falls for 138 days and collects up to 304mm (11.97") of precipitation.Snowfall
April, June through October are months without snowfall in Heidweiler.Daylight
In September, the average length of the day is 12h and 37min.On the first day of September in Heidweiler, sunrise is at 06:49 and sunset at 20:16. On the last day of the month, sunrise is at 07:32 and sunset at 19:13 CEST.
Sunshine
The average sunshine in September is 8.3h.UV index
In Heidweiler, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Heidweiler, Germany
- Average high temperature in September: 18.5°C
The warmest months (with the highest average high temperature) are July and August (22.8°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in September: 8.8°C
The month with the highest average low temperature is August (12.1°C).
The coldest month (with the lowest average low temperature) is January (-1.4°C).
Average pressure in September
Heidweiler, Germany
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1014.2mbar).
Average wind speed in September
Heidweiler, Germany
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is February (14km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).
Average humidity in September
Heidweiler, Germany
- Average humidity in September: 80%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Heidweiler, Germany
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is December (33mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Heidweiler, Germany
- Average rainfall days in September: 9.3 days
The months with the highest number of rainy days are June, July and August (13.3 days).
The month with the least rainy days is February (9 days).
Average snowfall in September
Heidweiler, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is December (33mm).
The months with the least snowfall are April, June, July, August, September and October (0mm).
Average snowfall days in September
Heidweiler, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Heidweiler, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Heidweiler, Germany
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is December (12.8 days).
Average UV index in September
Heidweiler, Germany
- Average UV index in September: 3
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
Heidweiler, Germany
- Average cloud cover in September: 39
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Heidweiler, Germany
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are November and December (7km).
