September weather forecast and climate
Capri, Italy

Ships on the clear waters with the Faraglioni stone rocks in the Giardini di Augusto in Capri, Italy
Ships on the clear waters with the Faraglioni stone rocks in the Giardini di Augusto in Capri, Italy
September, the first month of the autumn, in Capri, is also a moderately hot month, with average temperature varying between 24.6°C (76.3°F) and 22.4°C (72.3°F).

Temperature

In Capri, the average high-temperature in September is practically the same as in August - a still moderately hot 24.6°C (76.3°F). In September, in Capri, the average low-temperature is 22.4°C (72.3°F).

Humidity

The least humid month is September, with an average relative humidity of 66%.

Rainfall

In Capri, it is raining for 13.5 days, with typically 72mm (2.83") of accumulated precipitation. In Capri, 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, Italy, the average seawater temperature is 24.8°C (76.6°F).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.8°C (76.6°F) water. (FYI: The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).)

Daylight

The average length of the day in September is 12.5h.

Sunshine

In Capri, the average sunshine is 10.9h.

UV index

In Capri, Italy, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Capri?

The average high-temperature, in September, in Capri, is 24.6°C (76.3°F), while the average low-temperature is 22.4°C (72.3°F).

What is the least humid month in Capri?

September is the least humid month in Capri, with an average relative humidity of 66%.

What is the average humidity in September in Capri?

The average relative humidity in September in Capri, Italy, is 66%.

How many days does it rain in September in Capri?

In September, in Capri, the rain falls for 13.5 days. Throughout September, 72mm (2.83") of precipitation is accumulated.

When it does not snow in Capri?

In Capri snow does not fall in January through November.

How warm is the water in September in Capri?

In Capri, Italy, in September, the average water temperature is 24.8°C (76.6°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.8°C (76.6°F) water.

What is the average length of the day in September in Capri?

In September, the average length of the day is 12.5h.

How long on average sun shines in September in Capri?

The average sunshine in September in Capri is 10.9h.

How high is the UV index in September in Capri?

In September, the average daily maximum UV index in Capri is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the UV radiation.
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).
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).
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: 12.5h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 10.9h

Months with the most sunshine are June, July and August (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 5.6h).

Average sunshine days in September - Capri, Italy
  • Average sunshine days in September: 14.7 days

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

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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).