September weather forecast
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

Weather in September

The first month of the autumn, September, is still a warm month in Capri, Italy, with an average temperature varying between 24.6°C (76.3°F) and 22.4°C (72.3°F).

Temperature

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

Humidity

September is the least humid month, 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.

Sea temperature

In Capri, the average seawater temperature in September 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 in Capri, Italy, is 12h and 28min.
On the first day of September, sunrise is at 06:30 and sunset at 19:36. On the last day of the month, sunrise is at 06:58 and sunset at 18:48 CEST.

Sunshine

In September, the average sunshine is 10.9h.

UV index

The average daily maximum UV index in September in Capri, Italy, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Capri?

In September, in Capri, the average high-temperature is 24.6°C (76.3°F), and the average low-temperature is 22.4°C (72.3°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is calculated to be 29°C (84.2°F).

What is the least humid month in Capri?

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

What is the average humidity in September in Capri?

In September, the average relative humidity is 66%.

How much does it rain in Capri in September?

In Capri, during September, the rain falls for 13.5 days and regularly aggregates up to 72mm (2.83") of precipitation.

When it does not snow in Capri?

In Capri, Italy, snow does not fall in January through November.

What is the water temperature in September in Capri?

In Capri, Italy, the average seawater temperature in September 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.

How many hours of daylight does Capri have in September?

The average day length in September in Capri, Italy, is 12h and 28min.

When is the sunrise / sunset in September in Capri?

On the first day of September, sunrise is at 06:30 and sunset at 19:36. On the last day of the month, sunrise is at 06:58 and sunset at 18:48 CEST.

How long on average sun shines in September in Capri?

In September, the average sunshine duration in Capri is 10.9h.

What is the UV index reading in September in Capri?

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in September
Capri, Italy

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).

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Average pressure in September
Capri, Italy

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).

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Average wind speed in September
Capri, Italy

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).

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Average humidity in September
Capri, Italy

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%).

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Average rainfall in September
Capri, Italy

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).

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Average rainfall days in September
Capri, Italy

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).

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Average snowfall days in September
Capri, Italy

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).

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Average sea temperature in September
Capri, Italy

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).

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Average daylight in September /
Average sunshine in September
Capri, Italy

Average daylight in September / Average sunshine in September - Capri, Italy
  • Average daylight in September: 12h and 3min

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 5min

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).

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Average sunshine days in September
Capri, Italy

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).

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Average UV index in September
Capri, Italy

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).

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Average cloud cover in September
Capri, Italy

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).

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Average visibility in September
Capri, Italy

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).

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