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
Heukelum in September experiences a gentle temperature dip, with average high-temperatures reducing from an agreeable 22.3°C (72.1°F) in August to an enjoyable 18.9°C (66°F). Heukelum cools down to an average low-temperature of 11.3°C (52.3°F) throughout the month of September.Humidity
In Heukelum, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 9.8 days. Throughout September, 16mm (0.63") of precipitation is accumulated. Throughout the year, there are 133.9 rainfall days, and 229mm (9.02") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 39min.On the first day of September in Heukelum, sunrise is at 06:52 and sunset at 20:26. On the last day of the month, sunrise is at 07:39 and sunset at 19:19 CEST.
Sunshine
In Heukelum, the average sunshine in September is 7.1h.UV index
In September, the average daily maximum UV index in Heukelum is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Heukelum in September?
What is the average humidity in September in Heukelum?
How much does it rain in Heukelum in September?
When it does not snow in Heukelum?
How many hours of daylight does Heukelum have in September?
When is the sunrise / sunset in September in Heukelum?
How many hours of sunshine does Heukelum have in September?
What is the UV index reading in September in Heukelum?
Average temperature in September
Heukelum, 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 (5.2°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (14°C).
The coldest months (with the lowest average low temperature) are January and February (1.4°C).
Average pressure in September
Heukelum, Netherlands
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1011.6mbar).
Average wind speed in September
Heukelum, Netherlands
- Average wind speed in September: 11.9km/h
The windiest month (with the highest average wind speed) is December (17.5km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in September
Heukelum, Netherlands
- Average humidity in September: 81%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Heukelum, Netherlands
- Average rainfall in September: 16mm
The wettest months (with the highest rainfall) are June and July (25mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Heukelum, Netherlands
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is October (9.2 days).
Average snowfall in September
Heukelum, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (26mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Heukelum, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3 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
Heukelum, 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 1min
The month with the most sunshine is June (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Heukelum, Netherlands
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Heukelum, 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
Heukelum, Netherlands
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 66).
The months with the least cloud cover are April and August (Cloud cover 43).
Average visibility in September
Heukelum, 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).
