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
With the commencement of September, Heerlerheide records a moderate temperature decline, with the average high easing from August's agreeable 22.6°C (72.7°F) to a comfortable 18.9°C (66°F). The average temperature in Heerlerheide during September nights dips to a cool 10.6°C (51.1°F).Humidity
The average relative humidity in September in Heerlerheide is 79%.Rainfall
In September, in Heerlerheide, the rain falls for 12.6 days. Throughout September, 32mm (1.26") of precipitation is accumulated. Throughout the year, there are 182.9 rainfall days, and 486mm (19.13") of precipitation is accumulated.Snowfall
In Heerlerheide, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September in Heerlerheide, sunrise is at 06:50 and sunset at 20:21. On the last day of the month, sunrise is at 07:35 and sunset at 19:16 CEST.
Sunshine
The average sunshine in September is 7.8h.UV index
In Heerlerheide, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Act with care - The need to guard against sun damage is communicated. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the usual temperature for Heerlerheide in September?
What is the average humidity in September in Heerlerheide?
How many days does it rain in September in Heerlerheide?
When it does not snow in Heerlerheide?
How many hours of daylight does Heerlerheide have in September?
When is the sunrise / sunset in September in Heerlerheide?
How many hours of sunshine does Heerlerheide have in September?
What is the UV index intensity in September in Heerlerheide?
Average temperature in September
Heerlerheide, Netherlands
- Average high temperature in September: 18.9°C
The warmest months (with the highest average high temperature) are July and August (22.6°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (0.4°C).
Average pressure in September
Heerlerheide, 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 (1013.1mbar).
Average wind speed in September
Heerlerheide, Netherlands
- Average wind speed in September: 11.4km/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 (11.1km/h).
Average humidity in September
Heerlerheide, Netherlands
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Heerlerheide, Netherlands
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Heerlerheide, Netherlands
- Average rainfall days in September: 12.6 days
The months with the highest number of rainy days are May and July (18 days).
The months with the least rainy days are February, September and October (12.6 days).
Average snowfall in September
Heerlerheide, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Heerlerheide, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.9 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
Heerlerheide, 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 5min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Heerlerheide, Netherlands
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is October (15.5 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Heerlerheide, Netherlands
- 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
Heerlerheide, Netherlands
- Average cloud cover in September: 42
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
Heerlerheide, Netherlands
- 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).
Heerlerheide, Netherlands
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