September weather forecastHillegom, Netherlands
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Hillegom, Netherlands, with temperature in the range of an average low of 13.1°C (55.6°F) and an average high of 18°C (64.4°F).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's agreeable 21.3°C (70.3°F) to an enjoyable 18°C (64.4°F). Hillegom's September nights experience a subtle temperature dip to an average of 13.1°C (55.6°F).Humidity
The average relative humidity in September in Hillegom is 78%.Rainfall
In Hillegom, in September, it is raining for 14.4 days, with typically 39mm (1.54") of accumulated precipitation. In Hillegom, Netherlands, during the entire year, the rain falls for 193.2 days and collects up to 526mm (20.71") of precipitation.Snowfall
In Hillegom, Netherlands, snow does not fall in April through October.Daylight
In Hillegom, the average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 06:53 and sunset at 20:29. On the last day of September, in Hillegom, Netherlands, sunrise is at 07:41 and sunset at 19:21 CEST.
Sunshine
The average sunshine in September is 7.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health 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:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hillegom, Netherlands
- Average high temperature in September: 18°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in September: 13.1°C
The month with the highest average low temperature is August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (2.6°C).
Average pressure in September
Hillegom, Netherlands
- Average pressure in September: 1016.7mbar
The month with the highest atmospheric pressure is September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).
Average wind speed in September
Hillegom, Netherlands
- Average wind speed in September: 15.6km/h
The windiest month (with the highest average wind speed) is December (22.2km/h).
The calmest month (with the lowest average wind speed) is July (14.4km/h).
Average humidity in September
Hillegom, Netherlands
- Average humidity in September: 78%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Hillegom, Netherlands
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Hillegom, Netherlands
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is December (20.5 days).
The month with the least rainy days is October (13 days).
Average snowfall in September
Hillegom, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (28mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Hillegom, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.6 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
Hillegom, 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 18min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Hillegom, Netherlands
- Average sunshine days in September: 13 days
The month with the most sunshine days is October (15.5 days).
The month with the least sunshine days is December (6.1 days).
Average UV index in September
Hillegom, 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
Hillegom, Netherlands
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Hillegom, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
