September weather forecastSwalmen, Netherlands
September
Weather in September
September, the first month of the autumn in Swalmen, is still a refreshing month, with an average temperature ranging between max 19.3°C (66.7°F) and min 11.1°C (52°F).Temperature
In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 23.2°C (73.8°F) in August to a comfortable 19.3°C (66.7°F). Swalmen usually reports an average low-temperature of 11.1°C (52°F) during the month of September.Humidity
In Swalmen, the average relative humidity in September is 78%.Rainfall
In Swalmen, in September, it is raining for 6.7 days, with typically 7mm (0.28") of accumulated precipitation. In Swalmen, during the entire year, the rain falls for 86.6 days and collects up to 113mm (4.45") of precipitation.Snowfall
In Swalmen, Netherlands, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 06:49 and sunset at 20:21. On the last day of September, sunrise is at 07:35 and sunset at 19:15 CEST.
Sunshine
In September, the average sunshine is 8h.UV index
In Swalmen, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Swalmen, Netherlands
- Average high temperature in September: 19.3°C
The warmest months (with the highest average high temperature) are July and August (23.2°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure in September
Swalmen, Netherlands
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed in September
Swalmen, 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 months (with the lowest average wind speed) are July and August (11.3km/h).
Average humidity in September
Swalmen, Netherlands
- Average humidity in September: 78%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Swalmen, Netherlands
- Average rainfall in September: 7mm
The wettest month (with the highest rainfall) is February (12mm).
The driest month (with the least rainfall) is April (5mm).
Average rainfall days in September
Swalmen, Netherlands
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is May (9.1 days).
The month with the least rainy days is April (5.6 days).
Average snowfall in September
Swalmen, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Swalmen, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Swalmen, Netherlands
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Swalmen, Netherlands
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is October (23.2 days).
The month with the least sunshine days is June (17.8 days).
Average UV index in September
Swalmen, 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
Swalmen, Netherlands
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Swalmen, 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).
