September weather forecastGempen, Switzerland
September
Weather in September
September, the first month of the autumn in Gempen, is also an enjoyable month, with an average temperature ranging between max 19.4°C (66.9°F) and min 9°C (48.2°F).Temperature
With the onset of September, Gempen experiences a modest temperature adjustment, with the average high-temperature gently receding from a moderately hot 23.8°C (74.8°F) in August to an enjoyable 19.4°C (66.9°F). Throughout September, an average low-temperature of 9°C (48.2°F) is experienced in Gempen.Humidity
The average relative humidity in September is 81%.Rainfall
The month with the least rainfall in Gempen is September, when the rain falls for 13.6 days and typically collects 41mm (1.61") of precipitation.Snowfall
In Gempen, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:48 and sunset at 20:09. On the last day of September, in Gempen, sunrise is at 07:27 and sunset at 19:10 CEST.
Sunshine
The average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September in Gempen, Switzerland, is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gempen, Switzerland
- Average high temperature in September: 19.4°C
The warmest months (with the highest average high temperature) are July and August (23.8°C).
The month with the lowest average high temperature is January (3.4°C).
- Average low temperature in September: 9°C
The months with the highest average low temperature are July and August (12.6°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in September
Gempen, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The months with the lowest atmospheric pressure are April and November (1015.7mbar).
Average wind speed in September
Gempen, Switzerland
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is March (9.4km/h).
The calmest month (with the lowest average wind speed) is August (6.4km/h).
Average humidity in September
Gempen, Switzerland
- Average humidity in September: 81%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Gempen, Switzerland
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is June (100mm).
The driest month (with the least rainfall) is September (41mm).
Average rainfall days in September
Gempen, Switzerland
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is October (13 days).
Average snowfall in September
Gempen, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (88mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Gempen, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gempen, Switzerland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in September
Gempen, Switzerland
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is June (6.1 days).
Average UV index in September
Gempen, Switzerland
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Gempen, Switzerland
- Average cloud cover in September: 35
The months with the most cloud cover are January and December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Gempen, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January, February, September, October, November and December (8km).
