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
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's pleasant 22.4°C (72.3°F) to an enjoyable 18.9°C (66°F). Throughout the nights in September, Demen experiences an average low-temperature of 11°C (51.8°F).Humidity
In Demen, the average relative humidity in September is 81%.Rainfall
In Demen, Netherlands, in September, during 15.9 rainfall days, 39mm (1.54") of precipitation is typically accumulated. In Demen, during the entire year, the rain falls for 203.8 days and collects up to 547mm (21.54") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Demen, the average length of the day in September is 12h and 39min.On the first day of September, sunrise is at 06:50 and sunset at 20:24. On the last day of the month, sunrise is at 07:37 and sunset at 19:17 CEST.
Sunshine
The average sunshine in September is 7.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. It's recommended to limit sun exposure when its radiation is at its peak during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September in Demen?
When it does not snow?
How many hours of daylight does Demen have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Demen, Netherlands
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is July (22.5°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is August (13.8°C).
The coldest months (with the lowest average low temperature) are January and February (1.2°C).
Average pressure in September
Demen, Netherlands
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1012mbar).
Average wind speed in September
Demen, Netherlands
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is December (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in September
Demen, Netherlands
- Average humidity in September: 81%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Demen, Netherlands
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Demen, Netherlands
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is April (14.3 days).
Average snowfall in September
Demen, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (34mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Demen, Netherlands
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Demen, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Demen, Netherlands
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is April (13.2 days).
The months with the least sunshine days are June and August (8.3 days).
Average UV index in September
Demen, Netherlands
- Average UV index in September: 4
The months with the highest UV index are 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
Demen, Netherlands
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 65).
The months with the least cloud cover are April and August (Cloud cover 42).
Average visibility in September
Demen, Netherlands
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (9km).
The month with the lowest visibility is September (8km).
