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
September
Weather in September
Temperature
September's arrival aligns with a minor decrease in average high-temperatures, from August's moderately hot 23.3°C (73.9°F) to a refreshing 18.8°C (65.8°F). Throughout September, the temperature tends to fall to a consistent average low of 8.2°C (46.8°F).Humidity
The average relative humidity in September is 81%.Rainfall
The month with the least rainfall in Welschenrohr is September, when the rain falls for 14.5 days and typically collects 45mm (1.77") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Welschenrohr, Switzerland, is 12h and 34min.On the first day of the month, sunrise is at 06:49 and sunset at 20:09. On the last day of September, in Welschenrohr, Switzerland, sunrise is at 07:28 and sunset at 19:11 CEST.
Sunshine
In Welschenrohr, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. To guard against the harmful effects of the Sun, minimize exposure during midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Welschenrohr?
What is the average humidity in September in Welschenrohr?
What is the driest month in Welschenrohr?
How many days does it rain in September in Welschenrohr?
When it does not snow in Welschenrohr?
Does it snow in Welschenrohr in September?
How many hours of daylight does Welschenrohr have in September?
When is the sunrise / sunset in September in Welschenrohr?
How many hours of sunshine does Welschenrohr have in September?
What is the UV index intensity in September in Welschenrohr?
Average temperature in September
Welschenrohr, Switzerland
- Average high temperature in September: 18.8°C
The warmest months (with the highest average high temperature) are July and August (23.3°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in September: 8.2°C
The months with the highest average low temperature are July and August (11.8°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).
Average pressure in September
Welschenrohr, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Welschenrohr, Switzerland
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).
Average humidity in September
Welschenrohr, Switzerland
- Average humidity in September: 81%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in September
Welschenrohr, Switzerland
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is May (106mm).
The driest month (with the least rainfall) is September (45mm).
Average rainfall days in September
Welschenrohr, Switzerland
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is May (22.4 days).
The month with the least rainy days is February (10.6 days).
Average snowfall in September
Welschenrohr, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (153mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Welschenrohr, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Welschenrohr, Switzerland
- Average daylight in September: 12h and 4min
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 36min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Welschenrohr, Switzerland
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is May (6.6 days).
Average UV index in September
Welschenrohr, Switzerland
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Welschenrohr, Switzerland
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Welschenrohr, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
