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
The shift to September signals an average high-temperature of an enjoyable 18.3°C (64.9°F), subtly varied from August's 20.9°C (69.6°F). Stellendam's nighttime temperatures in September display a slight drop from daytime highs, averaging to a still refreshing 14°C (57.2°F).Humidity
The average relative humidity in September is 77%.Rainfall
In September, the rain falls for 14.3 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Stellendam, during the entire year, the rain falls for 167.9 days and collects up to 321mm (12.64") of precipitation.Snowfall
April through October are months without snowfall in Stellendam.Daylight
In Stellendam, the average length of the day in September is 12h and 39min.On the first day of September, sunrise is at 06:56 and sunset at 20:30. On the last day of the month, sunrise is at 07:43 and sunset at 19:23 CEST.
Sunshine
In September, the average sunshine is 7.4h.UV index
In Stellendam, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Stellendam?
What is the average humidity in September in Stellendam?
How much does it rain in Stellendam in September?
When it does not snow in Stellendam?
What is the average length of the day in September in Stellendam?
When is the sunrise / sunset in September in Stellendam?
How many hours of sunshine does Stellendam have in September?
What is the UV index reading in September in Stellendam?
Average temperature in September
Stellendam, Netherlands
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in September: 14°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (3.1°C).
Average pressure in September
Stellendam, Netherlands
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).
Average wind speed in September
Stellendam, Netherlands
- Average wind speed in September: 17.8km/h
The windiest month (with the highest average wind speed) is December (24.9km/h).
The calmest month (with the lowest average wind speed) is July (16.3km/h).
Average humidity in September
Stellendam, Netherlands
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Stellendam, Netherlands
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is August (43mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Stellendam, Netherlands
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is October (17 days).
The month with the least rainy days is April (9.6 days).
Average snowfall in September
Stellendam, Netherlands
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Stellendam, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Stellendam, 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 June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Stellendam, Netherlands
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is April (17.8 days).
The months with the least sunshine days are November and December (9.7 days).
Average UV index in September
Stellendam, 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
Stellendam, 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 37).
Average visibility in September
Stellendam, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January and December (9km).
