September weather forecastBolsena, Italy
September weather for Bolsena, Italy: The first month of the autumn, September, is also a moderately hot month in Bolsena, Italy, with an average temperature varying between 15.2°C (59.4°F) and 25.4°C (77.7°F). On the last day of September, in Bolsena, Italy, sunrise is at 07:08 and sunset at 18:55 CEST.
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Bolsena, Italy, with an average temperature varying between 15.2°C (59.4°F) and 25.4°C (77.7°F).Temperature
The arrival of September signals a shift in temperature, down from a hot 31.2°C (88.2°F) in August to a moderately hot 25.4°C (77.7°F). Bolsena's average low-temperature for the month of September records at a mild 15.2°C (59.4°F).Humidity
In Bolsena, the average relative humidity in September is 69%.Rainfall
In Bolsena, in September, it is raining for 12.2 days, with typically 44mm (1.73") of accumulated precipitation. In Bolsena, Italy, during the entire year, the rain falls for 137.9 days and collects up to 479mm (18.86") of precipitation.Snowfall
April through December are months without snowfall.Daylight
The average length of the day in September in Bolsena is 12h and 29min.On the first day of the month, sunrise is at 06:37 and sunset at 19:46. On the last day of September, in Bolsena, Italy, sunrise is at 07:08 and sunset at 18:55 CEST.
Sunshine
The average sunshine in September is 10.6h.UV index
In Bolsena, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bolsena, Italy
- Average high temperature in September: 25.4°C
The warmest month (with the highest average high temperature) is August (31.2°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in September: 15.2°C
The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is February (3.1°C).
Average pressure in September
Bolsena, Italy
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The months with the lowest atmospheric pressure are April and July (1014mbar).
Average wind speed in September
Bolsena, Italy
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is February (13.8km/h).
The calmest month (with the lowest average wind speed) is July (8.6km/h).
Average humidity in September
Bolsena, Italy
- Average humidity in September: 69%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Bolsena, Italy
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is November (73mm).
The driest month (with the least rainfall) is August (20mm).
Average rainfall days in September
Bolsena, Italy
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is November (14.1 days).
The month with the least rainy days is August (5.8 days).
Average snowfall in September
Bolsena, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (14mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Bolsena, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Bolsena, Italy
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Bolsena, Italy
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is November (14 days).
Average UV index in September
Bolsena, Italy
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Bolsena, Italy
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in September
Bolsena, Italy
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
