Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's onset brings a negligible change in high-temperatures, falling from a moderately hot 25.6°C (78.1°F) in August to an agreeable 22°C (71.6°F). Throughout September, the average low-temperature dips to an enjoyable 16°C (60.8°F).Humidity
In Riva Trigoso, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.5 days and accumulates 43mm (1.69") of precipitation.Snowfall
April through November are months without snowfall in Riva Trigoso.Daylight
In Riva Trigoso, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 06:45 and sunset at 19:58. On the last day of September, in Riva Trigoso, Italy, sunrise is at 07:19 and sunset at 19:04 CEST.
Sunshine
In September, the average sunshine in Riva Trigoso is 9.9h.UV index
The average daily maximum UV index in September in Riva Trigoso, Italy, is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What is the temperature in September in Riva Trigoso?
What is the average humidity in September in Riva Trigoso?
What is the driest month in Riva Trigoso?
How many days does it rain in September in Riva Trigoso?
When it does not snow in Riva Trigoso?
What is the average length of the day in September in Riva Trigoso?
When is the sunrise / sunset in September in Riva Trigoso?
How long on average sun shines in September in Riva Trigoso?
What is the UV index reading in September in Riva Trigoso?
Average temperature in September
Riva Trigoso, Italy
- Average high temperature in September: 22°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in September: 16°C
The month with the highest average low temperature is August (19.3°C).
The coldest month (with the lowest average low temperature) is February (4.9°C).
Average pressure in September
Riva Trigoso, Italy
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is December (1018.7mbar).
The months with the lowest atmospheric pressure are April, May and July (1013.9mbar).
Average wind speed in September
Riva Trigoso, Italy
- Average wind speed in September: 8.7km/h
The windiest month (with the highest average wind speed) is February (12.2km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).
Average humidity in September
Riva Trigoso, Italy
- Average humidity in September: 75%
The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Riva Trigoso, Italy
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is November (118mm).
The driest month (with the least rainfall) is September (43mm).
Average rainfall days in September
Riva Trigoso, Italy
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in September
Riva Trigoso, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is March (6mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Riva Trigoso, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.6 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
Riva Trigoso, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in September
Riva Trigoso, Italy
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in September
Riva Trigoso, Italy
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Riva Trigoso, Italy
- Average cloud cover in September: 23
The month with the most cloud cover is November (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Riva Trigoso, Italy
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
Riva Trigoso, Italy
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