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
A subtle shift in Jaun's weather is observed as August turns into September, with the average high temperature reducing from a refreshing 19.3°C (66.7°F) to a mild 15.1°C (59.2°F). An average temperature of 5.2°C (41.4°F) marks the nights in Jaun in September.Humidity
The average relative humidity in September in Jaun is 81%.Rainfall
September is the month with the least rainfall. Rain falls for 6.9 days and accumulates 13mm (0.51") of precipitation.Snowfall
June through September are months without snowfall in Jaun, Switzerland.Daylight
The average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 06:51 and sunset at 20:09. On the last day of September, in Jaun, sunrise is at 07:28 and sunset at 19:12 CEST.
Sunshine
The average sunshine in September is 8.5h.UV index
In Jaun, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 in September translates into this advice:
Guard yourself - Avoiding sunburn is suggested. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are the temperatures in Jaun in September?
What is the average humidity in September in Jaun?
What is the driest month in Jaun?
How many days does it rain in September in Jaun?
When it does not snow in Jaun?
Does it snow in Jaun in September?
What is the average length of the day in September in Jaun?
When is the sunrise / sunset in September in Jaun?
How long on average sun shines in September in Jaun?
What is the UV index intensity in September in Jaun?
Average temperature in September
Jaun, Switzerland
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is August (19.3°C).
The months with the lowest average high temperature are January and February (-0.3°C).
- Average low temperature in September: 5.2°C
The month with the highest average low temperature is July (7.9°C).
The coldest month (with the lowest average low temperature) is February (-9.1°C).
Average pressure in September
Jaun, Switzerland
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Jaun, Switzerland
- Average wind speed in September: 6.9km/h
The windiest month (with the highest average wind speed) is December (9.2km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in September
Jaun, Switzerland
- Average humidity in September: 81%
The months with the highest relative humidity are February and March (89%).
The months with the lowest relative humidity are July, August and October (79%).
Average rainfall in September
Jaun, Switzerland
- Average rainfall in September: 13mm
The wettest month (with the highest rainfall) is May (53mm).
The driest month (with the least rainfall) is September (13mm).
Average rainfall days in September
Jaun, Switzerland
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Jaun, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (236mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Jaun, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jaun, Switzerland
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Jaun, Switzerland
- Average sunshine days in September: 22.6 days
The month with the most sunshine days is October (24.6 days).
The month with the least sunshine days is June (17.8 days).
Average UV index in September
Jaun, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Jaun, Switzerland
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are August and October (Cloud cover 35).
Average visibility in September
Jaun, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are April, June, July, August, October, November and December (8km).
The months with the lowest visibility are January, February, March, May and September (7km).
Jaun, Switzerland
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