September weather forecast
Castellammare del Golfo, Italy

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Weather in September

September, the first month of the autumn in Castellammare del Golfo, is still a warm month, with an average temperature fluctuating between 20.3°C (68.5°F) and 26.2°C (79.2°F).

Temperature

The start of September involves a subtle temperature drop, shifting from a hot 30.5°C (86.9°F) in August to a moderately hot 26.2°C (79.2°F). An average low-temperature of 20.3°C (68.5°F) is noted during the nights in September in Castellammare del Golfo.

Humidity

The average relative humidity in September is 67%.

Rainfall

In Castellammare del Golfo, during September, the rain falls for 9.5 days and regularly aggregates up to 28mm (1.1") of precipitation. In Castellammare del Golfo, during the entire year, the rain falls for 130.5 days and collects up to 433mm (17.05") of precipitation.

Snowfall

February through November are months without snowfall.

Sea temperature

In Castellammare del Golfo, in September, the average water temperature is 24.9°C (76.8°F).
Note: Swimming in 24.9°C (76.8°F) waters may not appeal to those sensitive to cold. Yet, the presence of sunshine, the strength of the wind, and the air temperature can alter this experience. Some might even opt for a wetsuit for added comfort.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 06:38 and sunset at 19:37. On the last day of September, sunrise is at 07:03 and sunset at 18:52 CEST.

Sunshine

In Castellammare del Golfo, the average sunshine in September is 10.7h.

UV index

In September, the average daily maximum UV index in Castellammare del Golfo is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take note! Sand and water reflections strengthen the Sun's UV exposure.
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Frequently asked questions

What is the temperature in September in Castellammare del Golfo?

The high-temperature in Castellammare del Golfo, Italy, during September is 26.2°C (79.2°F) and the low-temperature is 20.3°C (68.5°F). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is evaluated at 34°C (93.2°F).

What is the average humidity in September in Castellammare del Golfo?

In Castellammare del Golfo, Italy, the average relative humidity in September is 67%.

How much does it rain in Castellammare del Golfo in September?

In Castellammare del Golfo, Italy, during September, the rain falls for 9.5 days and regularly aggregates up to 28mm (1.1") of precipitation.

When it does not snow in Castellammare del Golfo?

In Castellammare del Golfo, Italy, snow does not fall in February through November.

How warm is the water in September in Castellammare del Golfo?

In September, the average sea temperature in Castellammare del Golfo, Italy, is 24.9°C (76.8°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 24.9°C (76.8°F).

How many hours of daylight does Castellammare del Golfo have in September?

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

What time are sunrise and sunset in September in Castellammare del Golfo?

On the first day of September in Castellammare del Golfo, sunrise is at 06:38 and sunset at 19:37. On the last day of the month, sunrise is at 07:03 and sunset at 18:52 CEST.

How long on average sun shines in September in Castellammare del Golfo?

In September, the average sunshine duration in Castellammare del Golfo, Italy, is 10.7h.

What is the UV index intensity in September in Castellammare del Golfo?

The average daily maximum UV index in September in Castellammare del Golfo, Italy, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Castellammare del Golfo, Italy

Average temperature in September - Castellammare del Golfo, Italy
  • Average high temperature in September: 26.2°C

The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is February (13°C).

  • Average low temperature in September: 20.3°C

The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is February (7.1°C).

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Average pressure in September
Castellammare del Golfo, Italy

Average pressure in September - Castellammare del Golfo, Italy
  • Average pressure in September: 1015.6mbar

The month with the highest atmospheric pressure is December (1019mbar).
The month with the lowest atmospheric pressure is July (1014.2mbar).

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Average wind speed in September
Castellammare del Golfo, Italy

Average wind speed in September - Castellammare del Golfo, Italy
  • Average wind speed in September: 10.8km/h

The windiest month (with the highest average wind speed) is February (15.8km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).

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Average humidity in September
Castellammare del Golfo, Italy

Average humidity in September - Castellammare del Golfo, Italy
  • Average humidity in September: 67%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is July (57%).

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Average rainfall in September
Castellammare del Golfo, Italy

Average rainfall in September - Castellammare del Golfo, Italy
  • Average rainfall in September: 28mm

The wettest month (with the highest rainfall) is November (73mm).
The driest month (with the least rainfall) is July (2mm).

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Average rainfall days in September
Castellammare del Golfo, Italy

Average rainfall days in September - Castellammare del Golfo, Italy
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is January (17 days).
The month with the least rainy days is July (1.8 days).

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Average snowfall in September
Castellammare del Golfo, Italy

Average snowfall in September - Castellammare del Golfo, Italy
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (3mm).
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
Castellammare del Golfo, Italy

Average snowfall days in September - Castellammare del Golfo, Italy
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 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
Castellammare del Golfo, Italy

Average sea temperature in September - Castellammare del Golfo, Italy
  • Average sea temperature in September: 24.9°C

The best month for swimming (with the highest average sea temperature) is August (26.1°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
Castellammare del Golfo, Italy

Average daylight in September / Average sunshine in September - Castellammare del Golfo, Italy
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 10h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

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Average sunshine days in September
Castellammare del Golfo, Italy

Average sunshine days in September - Castellammare del Golfo, Italy
  • Average sunshine days in September: 18.3 days

The month with the most sunshine days is July (29 days).
The month with the least sunshine days is February (11 days).

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Average UV index in September
Castellammare del Golfo, Italy

Average UV index in September - Castellammare del Golfo, 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
Castellammare del Golfo, Italy

Average cloud cover in September - Castellammare del Golfo, Italy
  • Average cloud cover in September: 18

The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in September
Castellammare del Golfo, Italy

Average visibility in September - Castellammare del Golfo, 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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Castellammare del Golfo, Italy

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