December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall days in December
Average sea temperature in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

Sunset over the colorful old town of Cagliari in Italy

Weather in December

In December, Cagliari fully embraces winter, with temperatures dipping to 14.5°C (58.1°F) during the day and 8.9°C (48°F) at night. These temperatures, coupled with a decrease in daylight hours and sea temperature, discourage most outdoor activities. However, the city is bustling with holiday spirit, and the indoor activities and events can compensate for the cold outdoor conditions. The sea temperature declines further to 16.3°C (61.3°F) and the humidity remains relatively high. The onset of winter prepares the city to welcome the New Year.

Temperature

The arrival of December corresponds with a light shift in temperature, down from a comfortable 17.8°C (64°F) in November to a moderate 14.5°C (58.1°F). Throughout December, the temperature in Cagliari tends to fall to a consistent average low of 8.9°C (48°F).

Humidity

In Cagliari, the average relative humidity in December is 78%.

Rainfall

In Cagliari, Italy, during December, the rain falls for 10.3 days and regularly aggregates up to 23mm (0.91") of precipitation. Throughout the year, in Cagliari, there are 107.7 rainfall days, and 284mm (11.18") of precipitation is accumulated.

Snowfall

Months with snowfall are February and December. The months with the most snowfall days are February and December, with an average of 0.1 snowfall days.

Sea temperature

In Cagliari, the average seawater temperature in December is 16.3°C (61.3°F).
Note: Most people find it challenging to enjoy swimming in water that is 16.3°C (61.3°F). As water temperature falls below 21°C (69.8°F), controlling breathing grows increasingly difficult.

Daylight

The month with the shortest days in Cagliari is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 07:24 and sunset at 17:01. On the last day of the month, sunrise is at 07:42 and sunset at 17:10 CET.

Sunshine

In December, the average sunshine is 6.6h.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Cagliari. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the UV index of 3 transforms into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

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Frequently asked questions

What is the usual temperature for Cagliari in December?

In Cagliari, 14.5°C (58.1°F) is the average high-temperature and 8.9°C (48°F) is the average low-temperature during December. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 34°C (93.2°F).

What is the average humidity in December in Cagliari?

The average relative humidity in December in Cagliari, Italy, is 78%.

How many days does it rain in December in Cagliari?

In December, in Cagliari, the rain falls for 10.3 days. Throughout December, 23mm (0.91") of precipitation is accumulated.

What is the snowiest month in Cagliari?

The months with the most snowfall days in Cagliari are February and December, with an average of 0.1 snowfall days.

When does it start snowing in Cagliari?

December is the first month it typically snows. Throughout December, there are 0.1 snowfall days.

What is the sea temperature in December in Cagliari?

In December, the average sea temperature in Cagliari, Italy, is 16.3°C (61.3°F). For swimming, a surface water temperature of 16.3°C (61.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the month with the shortest days in Cagliari?

December has the shortest days of the year in Cagliari, with an average of 9h and 30min of daylight.

How many hours of daylight does Cagliari have in December?

In Cagliari, Italy, the average day length in December is 9h and 28min.

When are sunrise and sunset in December in Cagliari?

On the first day of December in Cagliari, Italy, sunrise is at 07:24 and sunset at 17:01. On the last day of the month, sunrise is at 07:42 and sunset at 17:10 CET.

How long on average sun shines in December in Cagliari?

The average sunshine duration in December is 6.6h.

When is the lowest UV index in Cagliari?

The months with the lowest UV index in Cagliari are January, February and December, with an average maximum UV index of 3.

What is the UV index reading in December in Cagliari?

The average daily maximum UV index in December in Cagliari is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

17.8°C 64°F

14.5°C 58.1°F

13.4°C 56.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.6km/h 9.7mph

16.4km/h 10.2mph

17.1km/h 10.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

12.6

10.3

11.8

Average snowfall days

0.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

14.4

17.5

16.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Cagliari, Italy

Average high temperature in December: 14.5°C

The warmest month (with the highest average high temperature) is August (30.6°C).
The months with the lowest average high temperature are January and February (13.4°C).

Average low temperature in December: 8.9°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 (6.7°C).

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Average pressure in December
Cagliari, Italy

Average pressure in December: 1019.3mbar

The month with the highest atmospheric pressure is December (1019.3mbar).
The month with the lowest atmospheric pressure is April (1014.2mbar).

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Average wind speed in December
Cagliari, Italy

Average wind speed in December: 15km/h

The windiest month (with the highest average wind speed) is February (15.9km/h).
The calmest month (with the lowest average wind speed) is August (10.7km/h).

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Average humidity in December
Cagliari, Italy

Average humidity in December: 78%

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

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Average rainfall in December
Cagliari, Italy

Average rainfall in December: 23mm

The wettest month (with the highest rainfall) is November (58mm).
The driest month (with the least rainfall) is July (5mm).

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Average rainfall days in December
Cagliari, Italy

Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is November (12.6 days).
The month with the least rainy days is July (3.3 days).

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Average snowfall days in December
Cagliari, Italy

Average snowfall days in December: 0.1 days

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

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Average sea temperature in December
Cagliari, Italy

Average sea temperature in December: 16.3°C

The best month for swimming (with the highest average sea temperature) is August (24.8°C).
The coldest month (with the lowest average sea temperature) is February (13.8°C).

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Average daylight in December /
Average sunshine in December
Cagliari, Italy

Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

Average sunshine in December: 6h and 4min

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

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Average sunshine days in December
Cagliari, Italy

Average sunshine days in December: 17.5 days

The month with the most sunshine days is July (26.4 days).
The month with the least sunshine days is November (14.4 days).

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Average UV index in December
Cagliari, Italy

Average UV index in December: 3

The months with the highest UV index are June and July (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 December
Cagliari, Italy

Average cloud cover in December: 29

The month with the most cloud cover is January (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 7).

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Average visibility in December
Cagliari, 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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December weather forecast
Cagliari, Italy

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