September weather forecastCosta, Italy
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Costa, Italy, with temperature in the range of an average low of 16°C (60.8°F) and an average high of 22°C (71.6°F).Temperature
The start of September involves a subtle temperature drop, shifting from a warm 25.6°C (78.1°F) in August to an agreeable 22°C (71.6°F). In September, Costa records an average nighttime temperature of 16°C (60.8°F).Humidity
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.Daylight
In Costa, 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 19:57. On the last day of September, sunrise is at 07:18 and sunset at 19:04 CEST.
Sunshine
In Costa, Italy, the average sunshine in September is 9.9h.UV index
In Costa, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 5 in September suggests the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Costa, 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
Costa, 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
Costa, 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
Costa, 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
Costa, 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
Costa, 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
Costa, 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
Costa, 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
Costa, Italy
- Average daylight in September: 12h and 30min
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 54min
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
Costa, 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
Costa, 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
Costa, 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
Costa, 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).
