September weather forecastBalerna, Switzerland
September
Weather in September
September, the first month of the autumn in Balerna, is also an agreeable month, with an average temperature fluctuating between 21°C (69.8°F) and 11.5°C (52.7°F).Temperature
The onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 25.9°C (78.6°F) in August to a pleasant 21°C (69.8°F). Balerna's temperature lowers to a mean of 11.5°C (52.7°F) during the nights in September.Humidity
The average relative humidity in September in Balerna is 74%.Rainfall
In Balerna, in September, it is raining for 15.4 days, with typically 67mm (2.64") of accumulated precipitation. Throughout the year, there are 172.1 rainfall days, and 1177mm (46.34") of precipitation is accumulated.Snowfall
April through September are months without snowfall in Balerna.Daylight
In Balerna, the average length of the day in September is 12h and 32min.On the first day of September in Balerna, sunrise is at 06:45 and sunset at 20:02. On the last day of the month, sunrise is at 07:21 and sunset at 19:05 CEST.
Sunshine
In September, the average sunshine in Balerna is 9.6h.UV index
The average daily maximum UV index in September in Balerna is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Balerna, Switzerland
- Average high temperature in September: 21°C
The warmest month (with the highest average high temperature) is July (26.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (15.2°C).
The coldest month (with the lowest average low temperature) is January (-0.9°C).
Average pressure in September
Balerna, Switzerland
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is December (1020.3mbar).
The month with the lowest atmospheric pressure is April (1014.9mbar).
Average wind speed in September
Balerna, Switzerland
- Average wind speed in September: 6.1km/h
The windiest month (with the highest average wind speed) is March (6.9km/h).
The calmest month (with the lowest average wind speed) is November (5.5km/h).
Average humidity in September
Balerna, Switzerland
- Average humidity in September: 74%
The month with the highest relative humidity is November (79%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Balerna, Switzerland
- Average rainfall in September: 67mm
The wettest month (with the highest rainfall) is November (177mm).
The driest month (with the least rainfall) is January (31mm).
Average rainfall days in September
Balerna, Switzerland
- Average rainfall days in September: 15.4 days
The months with the highest number of rainy days are June and July (20.2 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Balerna, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (69mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Balerna, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Balerna, 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: 9h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in September
Balerna, Switzerland
- Average sunshine days in September: 11.8 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is June (6 days).
Average UV index in September
Balerna, Switzerland
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Balerna, Switzerland
- Average cloud cover in September: 28
The month with the most cloud cover is November (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in September
Balerna, Switzerland
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
