September weather forecastBullet, Switzerland
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Bullet, Switzerland, with an average temperature fluctuating between 17.8°C (64°F) and 7.7°C (45.9°F).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from an agreeable 22.1°C (71.8°F) in August to a refreshing 17.8°C (64°F). Bullet throughout September, experiences an average nighttime temperature of 7.7°C (45.9°F).Humidity
In Bullet, the average relative humidity in September is 82%.Rainfall
The month with the least rainfall in Bullet is September, when the rain falls for 7.1 days and typically collects 8mm (0.31") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Bullet is 12h and 33min.On the first day of the month, sunrise is at 06:54 and sunset at 20:13. On the last day of September, sunrise is at 07:31 and sunset at 19:15 CEST.
Sunshine
In September, the average sunshine in Bullet is 8.6h.UV index
In September, the average daily maximum UV index in Bullet, Switzerland, is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 3 in September transforms into the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bullet, Switzerland
- Average high temperature in September: 17.8°C
The warmest months (with the highest average high temperature) are July and August (22.1°C).
The month with the lowest average high temperature is January (2.5°C).
- Average low temperature in September: 7.7°C
The month with the highest average low temperature is July (11.3°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in September
Bullet, 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
Bullet, Switzerland
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is February (11km/h).
The calmest month (with the lowest average wind speed) is August (6.6km/h).
Average humidity in September
Bullet, Switzerland
- Average humidity in September: 82%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and July (79%).
Average rainfall in September
Bullet, Switzerland
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is June (26mm).
The driest month (with the least rainfall) is September (8mm).
Average rainfall days in September
Bullet, Switzerland
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Bullet, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (25mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bullet, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Bullet, 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 36min
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 6min).
Average sunshine days in September
Bullet, Switzerland
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is May (15.8 days).
Average UV index in September
Bullet, 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
Bullet, Switzerland
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Bullet, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, November and December (9km).
The months with the lowest visibility are January, February, May, June, July, August, September and October (8km).
