September weather forecastDervio, Italy
September
Weather in September
September, the first month of the autumn in Dervio, is still a refreshing month, with an average temperature varying between 8.7°C (47.7°F) and 18.6°C (65.5°F).Temperature
Dervio in September experiences a gentle temperature dip, with average high-temperatures reducing from a warm 23°C (73.4°F) in August to a comfortable 18.6°C (65.5°F). Nighttime temperature in Dervio experiences an average drop to a chilly 8.7°C (47.7°F) in September.Humidity
The average relative humidity in September is 79%.Rainfall
In Dervio, in September, it is raining for 17.1 days, with typically 89mm (3.5") of accumulated precipitation. In Dervio, during the entire year, the rain falls for 190.8 days and collects up to 1414mm (55.67") of precipitation.Snowfall
In Dervio, snow does not fall in May through October.Daylight
In Dervio, the average length of the day in September is 12h and 32min.On the first day of September in Dervio, sunrise is at 06:44 and sunset at 20:01. On the last day of the month, sunrise is at 07:20 and sunset at 19:04 CEST.
Sunshine
In Dervio, the average sunshine in September is 9.2h.UV index
In Dervio, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dervio, Italy
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is July (23.9°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 8.7°C
The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-2.5°C).
Average pressure in September
Dervio, Italy
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is December (1020.4mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Dervio, Italy
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is July (7.6km/h).
The calmest month (with the lowest average wind speed) is November (6km/h).
Average humidity in September
Dervio, Italy
- Average humidity in September: 79%
The month with the highest relative humidity is November (81%).
The months with the lowest relative humidity are January and December (74%).
Average rainfall in September
Dervio, Italy
- Average rainfall in September: 89mm
The wettest month (with the highest rainfall) is August (191mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in September
Dervio, Italy
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is June (22.7 days).
The month with the least rainy days is December (8.7 days).
Average snowfall in September
Dervio, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is December (20mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Dervio, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Dervio, Italy
- 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 12min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 5h and 12min).
Average sunshine days in September
Dervio, Italy
- Average sunshine days in September: 11 days
The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is June (5 days).
Average UV index in September
Dervio, Italy
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Dervio, Italy
- Average cloud cover in September: 33
The month with the most cloud cover is November (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Dervio, Italy
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August and December (9km).
The months with the lowest visibility are September, October and November (8km).
