September weather forecastLeiderdorp, Netherlands
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Leiderdorp, Netherlands, with temperature in the range of an average low of 13.8°C (56.8°F) and an average high of 18.1°C (64.6°F).Temperature
With the start of September, Leiderdorp measures an average high-temperature of an enjoyable 18.1°C (64.6°F), not significantly differing from August's 21°C (69.8°F). In Leiderdorp, a slight decrease from the daytime peak is noted during the month of September, with an average low-temperature of 13.8°C (56.8°F).Humidity
In Leiderdorp, the average relative humidity in September is 77%.Rainfall
In Leiderdorp, in September, it is raining for 15.6 days, with typically 40mm (1.57") of accumulated precipitation. In Leiderdorp, Netherlands, during the entire year, the rain falls for 183.4 days and collects up to 400mm (15.75") of precipitation.Snowfall
In Leiderdorp, snow does not fall in April through October.Daylight
In September, the average length of the day in Leiderdorp is 12h and 39min.On the first day of September, sunrise is at 06:54 and sunset at 20:29. On the last day of the month, sunrise is at 07:42 and sunset at 19:21 CEST.
Sunshine
In September, the average sunshine is 7.1h.UV index
In Leiderdorp, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun is at its strongest around midday, find shade and limit exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Leiderdorp, Netherlands
- Average high temperature in September: 18.1°C
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 13.8°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (2.8°C).
Average pressure in September
Leiderdorp, Netherlands
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).
Average wind speed in September
Leiderdorp, Netherlands
- Average wind speed in September: 17.5km/h
The windiest month (with the highest average wind speed) is December (24.7km/h).
The calmest month (with the lowest average wind speed) is July (16.1km/h).
Average humidity in September
Leiderdorp, Netherlands
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are April and August (75%).
Average rainfall in September
Leiderdorp, Netherlands
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Leiderdorp, Netherlands
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is August (19.1 days).
The month with the least rainy days is April (11.3 days).
Average snowfall in September
Leiderdorp, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Leiderdorp, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Leiderdorp, Netherlands
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Leiderdorp, Netherlands
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is April (16.8 days).
The month with the least sunshine days is December (8.1 days).
Average UV index in September
Leiderdorp, 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
Leiderdorp, Netherlands
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 65).
The months with the least cloud cover are April and August (Cloud cover 38).
Average visibility in September
Leiderdorp, 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).
