September weather forecast
Capri, Italy

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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

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.

Frequently asked questions

What is the average September temperature in Capri?

In September, the average high-temperature and low-temperature in Capri, Italy, are 24.6°C (76.3°F) and 22.4°C (72.3°F) respectively. In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 29°C (84.2°F).

What is the least humid month in Capri?

The least humid month in Capri, Italy, is September, 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 many days does it rain in September in Capri?

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, snow does not fall in January through November.

What is the sea temperature in September in Capri?

In Capri, 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 Capri, the average day length in September is 12h and 28min.

When are sunrise and sunset in September in Capri?

In September, on the first day of the month, sunrise is at 06:30 and sunset at 19:35. On the last day of the month, sunrise is at 06:59 and sunset at 18:46 CEST.

How long on average sun shines in September in Capri?

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

What is the UV index reading in September in Capri?

In Capri, Italy, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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).

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).

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).

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%).

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).

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).

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).

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).

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).

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).

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).

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).

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).

Capri, Italy

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