September weather forecastRanda, Switzerland
September
Weather in September
The first month of the autumn, September, is still a cool month in Randa, Switzerland, with an average temperature fluctuating between 2.6°C (36.7°F) and 10.5°C (50.9°F).Temperature
With September's onset, the weather reveals a slight temperature decrease, transitioning from a refreshing 14.5°C (58.1°F) in August to a cool 10.5°C (50.9°F). Randa records an average nighttime low-temperature of 2.6°C (36.7°F) throughout September.Humidity
In Randa, the average relative humidity in September is 84%.Rainfall
In Randa, in September, it is raining for 19.1 days, with typically 95mm (3.74") of accumulated precipitation. Throughout the year, in Randa, there are 176.3 rainfall days, and 1541mm (60.67") of precipitation is accumulated.Snowfall
January through June, August through December are months with snowfall. In Randa, in September, during 1.8 snowfall days, 55mm (2.17") of snow is typically accumulated. Throughout the year, there are 126.3 snowfall days, and 4942mm (194.57") of snow is accumulated.Daylight
In Randa, Switzerland, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:50 and sunset at 20:07. On the last day of September, in Randa, sunrise is at 07:26 and sunset at 19:10 CEST.
Sunshine
In September, the average sunshine in Randa is 7.6h.UV index
The average daily maximum UV index in September in Randa is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 2 during September, leads to the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Randa, Switzerland
- Average high temperature in September: 10.5°C
The warmest month (with the highest average high temperature) is July (14.8°C).
The month with the lowest average high temperature is January (-3.6°C).
- Average low temperature in September: 2.6°C
The month with the highest average low temperature is August (5.3°C).
The coldest month (with the lowest average low temperature) is January (-12.3°C).
Average pressure in September
Randa, Switzerland
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).
Average wind speed in September
Randa, Switzerland
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is December (9.6km/h).
The calmest month (with the lowest average wind speed) is August (5.8km/h).
Average humidity in September
Randa, Switzerland
- Average humidity in September: 84%
The month with the highest relative humidity is March (91%).
The month with the lowest relative humidity is July (82%).
Average rainfall in September
Randa, Switzerland
- Average rainfall in September: 95mm
The wettest month (with the highest rainfall) is July (199mm).
The driest month (with the least rainfall) is January (51mm).
Average rainfall days in September
Randa, Switzerland
- Average rainfall days in September: 19.1 days
The month with the highest number of rainy days is July (26.6 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Randa, Switzerland
- Average snowfall in September: 55mm
The month with the highest snowfall is November (1182mm).
The month with the least snowfall is July (0mm).
Average snowfall days in September
Randa, Switzerland
- Average snowfall days in September: 1.8 days
The month with the highest number of snowfall days is March (21.7 days).
The months with the least snowfall days are July and August (0.1 days).
Average daylight in September /
Average sunshine in September
Randa, Switzerland
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is November (Average sunshine: 4h and 18min).
Average sunshine days in September
Randa, Switzerland
- Average sunshine days in September: 8.3 days
The month with the most sunshine days is December (15.1 days).
The month with the least sunshine days is August (3.3 days).
Average UV index in September
Randa, Switzerland
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January, February, March and April (UV index 1).
Average cloud cover in September
Randa, Switzerland
- Average cloud cover in September: 49
The month with the most cloud cover is April (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 45).
Average visibility in September
Randa, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are June, July, August and December (8km).
The months with the lowest visibility are March, April and November (6km).
