September weather forecastBulle, Switzerland
September
Weather in September
As September emerges on the calendar, Bulle greets the initial hints of autumn, with a notable shift in the color palette from vibrant greens to hues of russet and yellow. While the month has a generous daylight hour allocation of 12.6 hours, the city's temperature drops considerably, with the mercury dipping to 16°C (60.8°F) during the day and 5.8°C (42.4°F) after dusk. Remarkably, this month records the least rainfall of 10mm (0.39") for the year. Autumn begins to weave its magic across Bulle, imprinting the landscapes with stunning fall colors and much cooler climatic conditions.Temperature
The start of September in Bulle comes with a small reduction in the average high-temperature, subtly receding from an agreeable 20.1°C (68.2°F) in August to a comfortable 16°C (60.8°F). Bulle, in September, witnesses an average low-temperature of 5.8°C (42.4°F).Humidity
In Bulle, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Bulle. Rain falls for 7.2 days and accumulates 10mm (0.39") of precipitation.Snowfall
In Bulle, snow does not fall in June through September.Daylight
In September, the average length of the day in Bulle is 12h and 33min.On the first day of the month, sunrise is at 06:52 and sunset at 20:10. On the last day of September, in Bulle, sunrise is at 07:29 and sunset at 19:13 CEST.
Sunshine
In Bulle, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Bulle, Switzerland, is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bulle, Switzerland
- Average high temperature in September: 16°C
The warmest months (with the highest average high temperature) are July and August (20.1°C).
The month with the lowest average high temperature is January (0.6°C).
- Average low temperature in September: 5.8°C
The month with the highest average low temperature is July (8.8°C).
The coldest month (with the lowest average low temperature) is February (-7.7°C).
Average pressure in September
Bulle, Switzerland
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Bulle, Switzerland
- Average wind speed in September: 7km/h
The windiest month (with the highest average wind speed) is December (9.4km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in September
Bulle, Switzerland
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (78%).
Average rainfall in September
Bulle, Switzerland
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is May (38mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days in September
Bulle, Switzerland
- Average rainfall days in September: 7.2 days
The months with the highest number of rainy days are June and July (11.7 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in September
Bulle, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (142mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bulle, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bulle, Switzerland
- Average daylight in September: 12h and 30min
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 month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Bulle, Switzerland
- Average sunshine days in September: 21 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is June (15.2 days).
Average UV index in September
Bulle, Switzerland
- Average UV index in September: 3
The month with the highest UV index is June (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Bulle, Switzerland
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Bulle, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
