September weather forecastNumansdorp, Netherlands
September
Weather in September
September, the first month of the autumn in Numansdorp, is also an enjoyable month, with an average temperature ranging between max 18.9°C (66°F) and min 11.8°C (53.2°F).Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from an agreeable 22.3°C (72.1°F) in August to an enjoyable 18.9°C (66°F). Numansdorp encounters an average low-temperature of 11.8°C (53.2°F) during September nights.Humidity
In Numansdorp, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 16.6 days. Throughout September, 41mm (1.61") of precipitation is accumulated. Throughout the year, in Numansdorp, there are 201.9 rainfall days, and 550mm (21.65") of precipitation is accumulated.Snowfall
In Numansdorp, snow does not fall in April through October.Daylight
In Numansdorp, the average length of the day in September is 12h and 38min.On the first day of September in Numansdorp, sunrise is at 06:55 and sunset at 20:28. On the last day of the month, sunrise is at 07:42 and sunset at 19:21 CEST.
Sunshine
The average sunshine in September is 7.4h.UV index
In Numansdorp, Netherlands, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Numansdorp, Netherlands
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is July (22.4°C).
The month with the lowest average high temperature is January (5.4°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).
Average pressure in September
Numansdorp, 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 (1011.6mbar).
Average wind speed in September
Numansdorp, Netherlands
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is December (18.1km/h).
The calmest month (with the lowest average wind speed) is August (12.2km/h).
Average humidity in September
Numansdorp, Netherlands
- Average humidity in September: 80%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Numansdorp, Netherlands
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is August (60mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Numansdorp, Netherlands
- Average rainfall days in September: 16.6 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is February (13.4 days).
Average snowfall in September
Numansdorp, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (27mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Numansdorp, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Numansdorp, Netherlands
- Average daylight in September: 12h and 36min
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 24min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Numansdorp, Netherlands
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is August (7.7 days).
Average UV index in September
Numansdorp, 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
Numansdorp, Netherlands
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 64).
The months with the least cloud cover are April and August (Cloud cover 40).
Average visibility in September
Numansdorp, 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).
