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
Weather in September
Temperature
Sliffert's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's warm 23.1°C (73.6°F) to a refreshing 19°C (66.2°F). During the nights in September, Sliffert observes an average low-temperature of 11.1°C (52°F).Humidity
The average relative humidity in September in Sliffert is 80%.Rainfall
In September, the rain falls for 10.7 days. Throughout September, 20mm (0.79") of precipitation is accumulated. Throughout the year, there are 154 rainfall days, and 318mm (12.52") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September, sunrise is at 06:51 and sunset at 20:24. On the last day of the month, sunrise is at 07:38 and sunset at 19:18 CEST.
Sunshine
The average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What are September temperatures in Sliffert?
What is the average humidity in September in Sliffert?
How much does it rain in Sliffert in September?
When it does not snow in Sliffert?
What is the average length of the day in September in Sliffert?
When are sunrise and sunset in September in Sliffert?
How many hours of sunshine does Sliffert have in September?
What is the UV index reading in September in Sliffert?
Average temperature in September
Sliffert, Netherlands
- Average high temperature in September: 19°C
The warmest months (with the highest average high temperature) are July and August (23.1°C).
The month with the lowest average high temperature is January (4.9°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (14.3°C).
The coldest months (with the lowest average low temperature) are January and February (1.3°C).
Average pressure in September
Sliffert, Netherlands
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is September (1017.3mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Sliffert, Netherlands
- Average wind speed in September: 11.5km/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 (11.3km/h).
Average humidity in September
Sliffert, Netherlands
- Average humidity in September: 80%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Sliffert, Netherlands
- Average rainfall in September: 20mm
The wettest months (with the highest rainfall) are July, August and December (32mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Sliffert, Netherlands
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is September (10.7 days).
Average snowfall in September
Sliffert, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (32mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Sliffert, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.3 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
Sliffert, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Sliffert, Netherlands
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Sliffert, 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
Sliffert, Netherlands
- Average cloud cover in September: 45
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 42).
Average visibility in September
Sliffert, 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).
Sliffert, Netherlands
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