December weather forecast
Cefalù, Italy

December

Weather in December

The first month of the winter, December, is also a moderate month in Cefalù, Italy, with an average temperature fluctuating between 13.5°C (56.3°F) and 9.7°C (49.5°F).

Temperature

The onset of December brings a small shift in high-temperatures, falling from an enjoyable 17.5°C (63.5°F) in November to a mild 13.5°C (56.3°F). Cefalù in December observes a slight diminution in temperature from daily highs, recording a low-temperature average of 9.7°C (49.5°F).

Humidity

In Cefalù, the average relative humidity in December is 74%.

Rainfall

In Cefalù, in December, during 12.9 rainfall days, 38mm (1.5") of precipitation is typically accumulated. In Cefalù, during the entire year, the rain falls for 121.2 days and collects up to 368mm (14.49") of precipitation.

Snowfall

January and December are months with snowfall in Cefalù. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 2mm (0.08") of snow. Throughout the year, there are 0.4 snowfall days, and 6mm (0.24") of snow is accumulated.

Sea temperature

In Cefalù, the average seawater temperature in December is 17°C (62.6°F).
Note: For the majority, swimming in water with a temperature of 17°C (62.6°F) is not enjoyable. The difficulty in managing breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of December, sunrise is at 07:01 and sunset at 16:44. On the last day of the month, sunrise is at 07:19 and sunset at 16:54 CET.

Sunshine

In December, the average sunshine is 6.3h.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 3 suggests this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.

Frequently asked questions

What is the temperature in December?
The high-temperature during December is 13.5°C (56.3°F) and the low-temperature is 9.7°C (49.5°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).
What is the average humidity in December?
In December, the average relative humidity in Cefalù is 74%.
How many days does it rain in December?
In Cefalù, during December, the rain falls for 12.9 days and regularly aggregates up to 38mm (1.5") of precipitation.
When does it start snowing?
December is the first month it typically snows in Cefalù. Throughout December, in the average 0.2 snowfall days, it receives 2mm (0.08") of snow.
How cold is the water in December?
In Cefalù, the average seawater temperature in December is 17°C (62.6°F). For most, swimming in 17°C (62.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 36min of daylight.
What is the average length of the day in December?
In December, the average day length is 9h and 35min.
When is the sunrise / sunset in December?
In December, on the first day of the month, sunrise is at 07:01 and sunset at 16:44. On the last day of the month, sunrise is at 07:19 and sunset at 16:54 CET.
How many hours of sunshine does Cefalù have in December?
In Cefalù, the average sunshine duration in December is 6.3h.
When is the lowest UV index?
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the UV index intensity in December?
The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
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
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Cefalù, Italy
  • Average high temperature in December: 13.5°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 December: 9.7°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 December
Cefalù, Italy
  • Average pressure in December: 1019.1mbar

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 December
Cefalù, Italy
  • Average wind speed in December: 13.8km/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 December
Cefalù, Italy
  • Average humidity in December: 74%

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 December
Cefalù, Italy
  • Average rainfall in December: 38mm

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

Average rainfall days in December
Cefalù, Italy
  • Average rainfall days in December: 12.9 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 December
Cefalù, Italy
  • Average snowfall in December: 2mm

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 December
Cefalù, Italy
  • Average snowfall days in December: 0.2 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 December
Cefalù, Italy
  • Average sea temperature in December: 17°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 December /
Average sunshine in December
Cefalù, Italy
  • Average daylight in December: 9h and 4min

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 December: 6h and 2min

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 December
Cefalù, Italy
  • Average sunshine days in December: 14.8 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 December
Cefalù, Italy
  • Average UV index in December: 3

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 December
Cefalù, Italy
  • Average cloud cover in December: 30

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 December
Cefalù, Italy
  • Average visibility in December: 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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