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
Weather in September
Temperature
September brings a slight decrease in the average high-temperature, shifting from a moderately hot 23.3°C (73.9°F) in August to an enjoyable 19.3°C (66.7°F). Holtum observes an average nighttime temperature of 11.1°C (52°F) during September.Humidity
In Holtum, the average relative humidity in September is 78%.Rainfall
In Holtum, in September, during 11.9 rainfall days, 29mm (1.14") of precipitation is typically accumulated. In Holtum, Netherlands, during the entire year, the rain falls for 167.9 days and collects up to 422mm (16.61") of precipitation.Snowfall
April through October are months without snowfall in Holtum.Daylight
The average length of the day in September in Holtum is 12h and 38min.On the first day of the month, sunrise is at 06:50 and sunset at 20:22. On the last day of September, in Holtum, sunrise is at 07:36 and sunset at 19:16 CEST.
Sunshine
In Holtum, the average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Holtum?
What is the average humidity in September in Holtum?
How many days does it rain in September in Holtum?
When it does not snow in Holtum?
How many hours of daylight does Holtum have in September?
What time are sunrise and sunset in September in Holtum?
How many hours of sunshine does Holtum have in September?
What is the UV index reading in September in Holtum?
Average temperature in September
Holtum, Netherlands
- Average high temperature in September: 19.3°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).
Average pressure in September
Holtum, Netherlands
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in September
Holtum, Netherlands
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is December (17.7km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in September
Holtum, Netherlands
- Average humidity in September: 78%
The month with the highest relative humidity is December (87%).
The months with the lowest relative humidity are April and August (74%).
Average rainfall in September
Holtum, Netherlands
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is June (45mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Holtum, Netherlands
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is August (16.8 days).
The months with the least rainy days are February and September (11.9 days).
Average snowfall in September
Holtum, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is January (40mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Holtum, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 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
Holtum, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Holtum, Netherlands
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in September
Holtum, 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
Holtum, Netherlands
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Holtum, Netherlands
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Holtum, Netherlands
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