September weather forecastLa Roche, Switzerland
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in La Roche, Switzerland, with an average temperature varying between 17.6°C (63.7°F) and 7.4°C (45.3°F).Temperature
La Roche records a mild change in average high-temperature during September, easing from an agreeable 21.9°C (71.4°F) in August to a refreshing 17.6°C (63.7°F). During September, La Roche experiences an average low-temperature of 7.4°C (45.3°F) at night.Humidity
In La Roche, the average relative humidity in September is 82%.Rainfall
September is the month with the least rainfall in La Roche. Rain falls for 16.5 days and accumulates 53mm (2.09") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in La Roche is 12h and 33min.On the first day of the month, sunrise is at 06:51 and sunset at 20:10. On the last day of September, sunrise is at 07:29 and sunset at 19:13 CEST.
Sunshine
In La Roche, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 3 suggests this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
La Roche, Switzerland
- Average high temperature in September: 17.6°C
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 7.4°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is February (-4.6°C).
Average pressure in September
La Roche, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
La Roche, Switzerland
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is February (9.9km/h).
The calmest month (with the lowest average wind speed) is August (6.3km/h).
Average humidity in September
La Roche, Switzerland
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, July and August (79%).
Average rainfall in September
La Roche, Switzerland
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is June (117mm).
The driest month (with the least rainfall) is September (53mm).
Average rainfall days in September
La Roche, Switzerland
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is May (23.1 days).
The month with the least rainy days is February (12.2 days).
Average snowfall in September
La Roche, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (192mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
La Roche, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
La Roche, Switzerland
- Average daylight in September: 12h and 36min
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 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
La Roche, Switzerland
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is June (4.3 days).
Average UV index in September
La Roche, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
La Roche, Switzerland
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
La Roche, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, February, May, June, July, September, October, November and December (8km).
