September weather forecast
Palermo, Italy

The fountain of shame in Palermo, Italy
The fountain of shame in Palermo, Italy

Weather in September

The first month of the autumn, September, is still a warm month in Palermo, Italy, with an average temperature ranging between max 25.5°C (77.9°F) and min 19.8°C (67.6°F).

Temperature

In September, the average high-temperature slightly decreases from a moderately hot 29.8°C (85.6°F) in August to a still warm 25.5°C (77.9°F). In Palermo, in September, the average low-temperature is 19.8°C (67.6°F).

Humidity

In Palermo, the average relative humidity in September is 68%.

Rainfall

The wettest months are September and October, with an average 57mm (2.24") of rainfall.

Snowfall

February through November are months without snowfall.

Sea temperature

In September, the average sea temperature in Palermo is 25.1°C (77.2°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 06:36 and sunset at 19:36. On the last day of the month, sunrise is at 07:01 and sunset at 18:51 CEST.

Sunshine

In Palermo, the average sunshine in September is 10.8h.

UV index

The average daily maximum UV index in September in Palermo is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
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 strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in September in Palermo?

The average high-temperature, in September, in Palermo, is 25.5°C (77.9°F), while the average low-temperature is 19.8°C (67.6°F). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in August is evaluated at 32°C (89.6°F).

What is the average humidity in September in Palermo?

In September, the average relative humidity in Palermo, Italy, is 68%.

What is the wettest month in Palermo?

The wettest months in Palermo, Italy, are September and October, with an average 57mm (2.24") of rainfall.

How much does it rain in Palermo in September?

In Palermo, Italy, in September, during 12.5 rainfall days, 57mm (2.24") of precipitation is typically accumulated.

When it does not snow in Palermo?

In Palermo, snow does not fall in February through November.

How warm is the water in September in Palermo?

In Palermo, the average seawater temperature in September is 25.1°C (77.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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

In September, the average day length in Palermo is 12h and 26min.

When is the sunrise / sunset in September in Palermo?

In September, on the first day of the month, sunrise is at 06:36 and sunset at 19:36. On the last day of the month, in Palermo, sunrise is at 07:01 and sunset at 18:51 CEST.

How long on average sun shines in September in Palermo?

In September, the average sunshine duration in Palermo is 10.8h.

How high is the UV index in September in Palermo?

In September, the average daily maximum UV index in Palermo, Italy, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Palermo, Italy

Average temperature in September - Palermo, Italy
  • Average high temperature in September: 25.5°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is February (12.5°C).

  • Average low temperature in September: 19.8°C

The month with the highest average low temperature is August (22°C).
The coldest month (with the lowest average low temperature) is February (6.8°C).

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Average pressure in September
Palermo, Italy

Average pressure in September - Palermo, Italy
  • Average pressure in September: 1015.6mbar

The month with the highest atmospheric pressure is December (1019mbar).
The months with the lowest atmospheric pressure are April and July (1014.3mbar).

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Average wind speed in September
Palermo, Italy

Average wind speed in September - Palermo, Italy
  • Average wind speed in September: 8.9km/h

The windiest month (with the highest average wind speed) is February (13.9km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).

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Average humidity in September
Palermo, Italy

Average humidity in September - Palermo, Italy
  • Average humidity in September: 68%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is July (59%).

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Average rainfall in September
Palermo, Italy

Average rainfall in September - Palermo, Italy
  • Average rainfall in September: 57mm

The wettest months (with the highest rainfall) are September and October (57mm).
The driest month (with the least rainfall) is July (5mm).

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Average rainfall days in September
Palermo, Italy

Average rainfall days in September - Palermo, Italy
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is January (13.6 days).
The month with the least rainy days is July (3.3 days).

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Average snowfall in September
Palermo, Italy

Average snowfall in September - Palermo, Italy
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in September
Palermo, Italy

Average snowfall days in September - Palermo, Italy
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in September
Palermo, Italy

Average sea temperature in September - Palermo, Italy
  • Average sea temperature in September: 25.1°C

The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (14.3°C).

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

Average daylight in September / Average sunshine in September - Palermo, Italy
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 46min).
The month with the shortest days is December (Average daylight: 9h and 34min).

  • Average sunshine in September: 10h and 48min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

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Average sunshine days in September
Palermo, Italy

Average sunshine days in September - Palermo, Italy
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is February (14.3 days).

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Average UV index in September
Palermo, Italy

Average UV index in September - Palermo, Italy
  • Average UV index in September: 6

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in September
Palermo, Italy

Average cloud cover in September - Palermo, Italy
  • Average cloud cover in September: 19

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in September
Palermo, Italy

Average visibility in September - Palermo, 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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