Ajaccio
France
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Ajaccio, France

September, the first month of the autumn, in Ajaccio, is also a moderately hot month, with average temperature ranging between min 15.1°C (59.2°F) and max 25.9°C (78.6°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still warm 25.9°C (78.6°F). In September, in Ajaccio, the average low-temperature is 15.1°C (59.2°F).

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Ajaccio, in September, during 5 rainfall days, 51.5mm (2") of precipitation is typically accumulated. Throughout the year, in Ajaccio, there are 68.5 rainfall days, and 615.6mm (24.2") of precipitation is accumulated.

Snowfall

In Ajaccio, France, snow does not fall in April through October.

Sea temperature

In September, the average sea temperature is 22.9°C (73.2°F).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 22.9°C (73.2°F) water. (FYI: The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).)

Daylight

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

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Ajaccio, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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 Ajaccio?

The average high-temperature, in September, is 25.9°C (78.6°F), while the average low-temperature is 15.1°C (59.2°F).

What is the average humidity in September in Ajaccio?

The average relative humidity in September in Ajaccio, France, is 78%.

How many days does it rain in September in Ajaccio?

In Ajaccio, France, in September, it is raining for 5 days, with typically 51.5mm (2") of accumulated precipitation.

When it does not snow in Ajaccio?

April through October are months without snowfall.

What is the water temperature in September in Ajaccio?

In Ajaccio, in September, the average water temperature is 22.9°C (73.2°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 22.9°C (73.2°F).

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

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

How long on average sun shines in September in Ajaccio?

In September, the average sunshine in Ajaccio, France, is 8.6h.

What is the UV index reading in September in Ajaccio?

In September, the average daily maximum UV index in Ajaccio, France, is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Ajaccio, France
  • Average high temperature in September: 25.9°C

The warmest month (with the highest average high temperature) is August (28.7°C).
The month with the lowest average high temperature is January (13.7°C).

  • Average low temperature in September: 15.1°C

The month with the highest average low temperature is August (17.6°C).
The coldest month (with the lowest average low temperature) is February (4.1°C).

Average humidity in September - Ajaccio, France
  • Average humidity in September: 78%

The month with the highest relative humidity is December (82%).
Months with the lowest relative humidity are July and August (76%).

Average rainfall in September - Ajaccio, France
  • Average rainfall in September: 51.5mm

The wettest month (with the highest rainfall) is November (103.9mm).
The driest month (with the lowest rainfall) is July (6.7mm).

Average rainfall days in September - Ajaccio, France
  • Average rainfall days in September: 5 days

The month with the highest number of rainy days is November (9 days).
The month with the lowest number of rainy days is July (1 days).

Average snowfall days in September - Ajaccio, France
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.8 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average sea temperature in September - Ajaccio, France
  • Average sea temperature in September: 22.9°C

The best month for swimming (with the highest average sea temperature) is August (23.8°C).
The coldest month (with the lowest average sea temperature) is February (13.3°C).

Average daylight in September / Average sunshine in September - Ajaccio, France
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 8.6h

The month with most sunshine is July (Average sunshine: 11.9h).
The month with least sunshine is December (Average sunshine: 3.7h).

Average UV index in September - Ajaccio, France
  • Average UV index in September: 6

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 1).