September weather forecastAlassio, Italy
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Alassio, Italy, with an average temperature varying between 17°C (62.6°F) and 21.9°C (71.4°F).Temperature
Alassio's weather subtly changes with the onset of September, barely falling from a warm 25.3°C (77.5°F) in August to an agreeable 21.9°C (71.4°F). Alassio marks an average drop to an enjoyable 17°C (62.6°F) during nighttime in September, following the high of the day.Humidity
In September, the average relative humidity is 72%.Rainfall
In Alassio, in September, during 11.1 rainfall days, 30mm (1.18") of precipitation is typically accumulated. In Alassio, Italy, during the entire year, the rain falls for 140.9 days and collects up to 648mm (25.51") of precipitation.Snowfall
April through October are months without snowfall.Sea temperature
In Alassio, in September, the average water temperature is 22.8°C (73°F).Note: If you're wary of the cold, the surrounding conditions—sunshine, wind, and air temperature become crucial when swimming in 22.8°C (73°F) waters. Olympic standards, for reference, are set between 25°C (77°F) and 28°C (82.4°F).
Daylight
In Alassio, the average length of the day in September is 12h and 31min.On the first day of September in Alassio, sunrise is at 06:51 and sunset at 20:03. On the last day of the month, sunrise is at 07:24 and sunset at 19:09 CEST.
Sunshine
The average sunshine in September is 10h.UV index
In Alassio, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 5 in September transforms into this advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be alert! The reflection of water and sand augments UV radiation intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Alassio, Italy
- Average high temperature in September: 21.9°C
The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (9.4°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is August (20.1°C).
The coldest months (with the lowest average low temperature) are January and February (5.8°C).
Average pressure in September
Alassio, Italy
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is April (1013.8mbar).
Average wind speed in September
Alassio, Italy
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is July (8.7km/h).
Average humidity in September
Alassio, Italy
- Average humidity in September: 72%
The month with the highest relative humidity is June (76%).
The months with the lowest relative humidity are January, February and December (70%).
Average rainfall in September
Alassio, Italy
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is November (138mm).
The driest month (with the least rainfall) is August (23mm).
Average rainfall days in September
Alassio, Italy
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is August (9.2 days).
Average snowfall in September
Alassio, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Alassio, 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 and October (0 days).
Average sea temperature in September
Alassio, Italy
- Average sea temperature in September: 22.8°C
The best month for swimming (with the highest average sea temperature) is August (24.2°C).
The coldest month (with the lowest average sea temperature) is February (13°C).
Average daylight in September /
Average sunshine in September
Alassio, Italy
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and November (Average sunshine: 6h and 0min).
Average sunshine days in September
Alassio, Italy
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (19 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in September
Alassio, Italy
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Alassio, Italy
- Average cloud cover in September: 20
The month with the most cloud cover is November (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Alassio, Italy
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
