September weather forecastCapri, Italy
September
Weather in September
Capri transitions into the autumn season with September, as the temperatures gradually start to decline from the summer peak, settling at an average high of 24.6°C (76.3°F). Visitors will experience longer intervals of pleasant weather as rainfall and humidity remain relatively low. The Island's landscape begins to reflect the change of season, offering diverse, breathtaking views. As the wind picks up, providing a refreshing contrast to the warm September sun, visitors will enjoy exploring Capri's rich history and beauty. Despite the commencement of fall, September remains a delightful time to visit, with its continuing warm weather and vibrant aura.Temperature
Capri's weather in September, with an average high-temperature of a still warm 24.6°C (76.3°F), subtly shifts from August's 27.3°C (81.1°F). Capri's average nighttime temperature in September modestly descends to a pleasant 22.4°C (72.3°F).Humidity
The least humid month is September, with an average relative humidity of 66%.Rainfall
In Capri, during September, the rain falls for 13.5 days and regularly aggregates up to 72mm (2.83") of precipitation. In Capri, Italy, during the entire year, the rain falls for 154.7 days and collects up to 815mm (32.09") of precipitation.Snowfall
January through November are months without snowfall in Capri.Sea temperature
In Capri, in September, the average water temperature is 24.8°C (76.6°F).Note: People sensitive to cold might find swimming in 24.8°C (76.6°F) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.
Daylight
In September, the average length of the day in Capri, Italy, is 12h and 28min.On the first day of the month, sunrise is at 06:30 and sunset at 19:35. On the last day of September, in Capri, Italy, sunrise is at 06:59 and sunset at 18:46 CEST.
Sunshine
In September, the average sunshine is 10.9h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 6 in September leads to these guidelines:
Fend off overexposure. Sun protection is vital. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Boost your sun resistance with garments that are densely woven yet spacious. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Capri, Italy
- Average high temperature in September: 24.6°C
The warmest month (with the highest average high temperature) is August (27.3°C).
The months with the lowest average high temperature are January and February (13.1°C).
- Average low temperature in September: 22.4°C
The month with the highest average low temperature is August (24.8°C).
The coldest months (with the lowest average low temperature) are January and February (10.8°C).
Average pressure in September
Capri, Italy
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is April (1014.1mbar).
Average wind speed in September
Capri, Italy
- Average wind speed in September: 13.4km/h
The windiest month (with the highest average wind speed) is February (19.5km/h).
The calmest month (with the lowest average wind speed) is August (11.1km/h).
Average humidity in September
Capri, Italy
- Average humidity in September: 66%
The month with the highest relative humidity is April (73%).
The month with the lowest relative humidity is September (66%).
Average rainfall in September
Capri, Italy
- Average rainfall in September: 72mm
The wettest month (with the highest rainfall) is November (162mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in September
Capri, Italy
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is November (17.6 days).
The month with the least rainy days is August (4.3 days).
Average snowfall days in September
Capri, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Capri, Italy
- Average sea temperature in September: 24.8°C
The best month for swimming (with the highest average sea temperature) is August (26°C).
The coldest month (with the lowest average sea temperature) is February (13.9°C).
Average daylight in September /
Average sunshine in September
Capri, Italy
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 54min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Capri, Italy
- Average sunshine days in September: 14.7 days
The months with the most sunshine days are July and August (24.2 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in September
Capri, Italy
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Capri, Italy
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Capri, 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).
