September weather forecastCefalù, Italy

September

Weather in September

September, the first month of the autumn in Cefalù, is also a moderately hot month, with an average temperature fluctuating between 19.7°C (67.5°F) and 24.6°C (76.3°F).

Temperature

During the shift to September, Cefalù records a mild decrease in average high-temperature, moving from a warm 28.3°C (82.9°F) in August to a still moderately hot 24.6°C (76.3°F). September witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 19.7°C (67.5°F).

Humidity

In September, the average relative humidity is 69%.

Rainfall

In Cefalù, during September, the rain falls for 10.9 days and regularly aggregates up to 42mm (1.65") of precipitation. Throughout the year, there are 121.2 rainfall days, and 368mm (14.49") of precipitation is accumulated.

Snowfall

February through November are months without snowfall.

Sea temperature

In Cefalù, in September, the average water temperature is 25.3°C (77.5°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 06:34 and sunset at 19:33. On the last day of September, sunrise is at 06:59 and sunset at 18:48 CEST.

Sunshine

The average sunshine in September is 11h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 6 in September suggests the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.

Updated: Aug 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

September temperatures vary between a high-temperature of 24.6°C (76.3°F) and a low-temperature of 19.7°C (67.5°F). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 30°C (86°F).

The average relative humidity in September is 69%.

In Cefalù, in September, it is raining for 10.9 days, with typically 42mm (1.65") of accumulated precipitation.

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

In Cefalù, the average seawater temperature in September is 25.3°C (77.5°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

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

In September, on the first day of the month, sunrise is at 06:34 and sunset at 19:33. On the last day of the month, sunrise is at 06:59 and sunset at 18:48 CEST.

The average sunshine duration in September is 11h.

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

28.3°C

24.6°C

21.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.3km/h

9.9km/h

11.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

23.7

16.2

14.5

Average UV index

Average cloud cover

17%

24%

Average visibility

10km

Average temperature in September
Cefalù, Italy

Average high temperature in September: 24.6°C

The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (12.2°C).

Average low temperature in September: 19.7°C

The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is February (7.4°C).

Average pressure in September
Cefalù, Italy

Average pressure in September: 1015.7mbar

The month with the highest atmospheric pressure is December (1019.1mbar).
The month with the lowest atmospheric pressure is July (1014.3mbar).

Average wind speed in September
Cefalù, Italy

Average wind speed in September: 9.4km/h

The windiest month (with the highest average wind speed) is February (15km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).

Average humidity in September
Cefalù, Italy

Average humidity in September: 69%

The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are July and August (64%).

Average rainfall in September
Cefalù, Italy

Average rainfall in September: 42mm

The wettest month (with the highest rainfall) is January (50mm).
The driest month (with the least rainfall) is July (6mm).

Average rainfall days in September
Cefalù, Italy

Average rainfall days in September: 10.9 days

The month with the highest number of rainy days is January (15 days).
The month with the least rainy days is July (3.1 days).

Average snowfall in September
Cefalù, Italy

Average snowfall in September: 0mm

The month with the highest snowfall is January (4mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Cefalù, Italy

Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and December (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

Average sea temperature in September
Cefalù, Italy

Average sea temperature in September: 25.3°C

The best month for swimming (with the highest average sea temperature) is August (26.4°C).
The coldest month (with the lowest average sea temperature) is February (14.6°C).

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

Average daylight in September: 12h and 24min

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: 11h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

Average sunshine days in September
Cefalù, Italy

Average sunshine days in September: 16.2 days

The month with the most sunshine days is July (27.4 days).
The months with the least sunshine days are January and February (12.7 days).

Average UV index in September
Cefalù, Italy

Average UV index in September: 6

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

Average cloud cover in September
Cefalù, Italy

Average cloud cover in September: 17

The month with the most cloud cover is January (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in September
Cefalù, 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).