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Cagliari in December: Weather, Average temperature and Climate

Take a look at past year’s weather for Cagliari in December and see if it is worth visiting.
Check flight prices to Cagliari on Avionero:
December

Weather in Cagliari in December 2024

OK Weather
Mild
☁️
Cloudy
🌊
Fresh water
Cagliari in December usually sees fair weather conditions, with an average daily high temperature of +15°C and roughly 9 sunny days. However, you should prepare for about 10 rainy days with an average precipitation of 56 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • December is usually the wettest month of the year in Cagliari;

Average weather

☀️
+15°C
Avg. max. temperature
-2°C
Min.
+23°C
Max.
56 mm
Total precipitation
81%
Avg. humidity
3 m/s
Avg. wind
9 ☀️
Sunny Days
10 ⛅️
Cloudy
10 🌦
Rainy
Our opinion: Cagliari has OK weather in December.

Average temperature in Cagliari in December

Here are the expected maximum, average and minimum temperatures in Cagliari for December based on the historical data.
Last Year
Historical Data

The temperature in December is +17°C on average, with a range between a maximum of +21°C during the day and a minimum of +3°C at night.

The average maximum temperature goes down 11% by the end of the month, compared with the beginning of the month, from +20°C to +18°C.

Is Cagliari warm or cold in December?

Cagliari is typically mild in December.

Maximum temperatures go down compared to the previous month from +18°C to +15°C. The minimum temperature also goes down from +11°C to +8°C.

Pack a light jacket as it will be warm in the day and cool in the evenings.

December is one of the coolest months in Cagliari, here is the comparison with other months:

Water temperature in Cagliari in December

Water in Cagliari in December is Fresh. It varies from +14°C to +19°C, with an average of +16°C. Note that the air temperature is lower than the water temperature, averaging around +15°C.

In December, water temperatures are average relative to the rest of the year:

The warmest water temperatures in Cagliari are reached in August, when the average sea temperature rises to +25°C. The coldest water temperatures are in February, with an average of +14°C.

Can you swim in Cagliari in December?

Water temperature (+16°C) in Cagliari in December might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +16°C
🏄‍♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.

Climate in Cagliari in December

Cagliari weather looks like this, on average, in December and the surrounding months.
NovemberDecemberJanuary
Avg. temperature
+18°C+15°C+14°C
Min. temperature
0°C-2°C-3°C
Max. temperature
+26°C+23°C+21°C
Rainfall
57 mm56 mm33 mm
Wind
3 m/s3 m/s3 m/s
Avg. water temperature
+19°C+16°C+14°C
Humidity
80%81%81%
Air pressure
1014 HPa1016 HPa1017 HPa
Sunny days
899
Cloudy days
81011
Rainy days
101010
Snowy days
000

December weather is still as ok as in November. It’s getting colder in December. From +18°C in the day, the average maximum temperature lowers to +15°C. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 57 mm to 56 mm. Humidity rises from 80% to 81%. The average wind speed doesn’t change much during December, staying around 3 m/s. The good news is there are likely to be more sunny days in December, from 8 to 9.

January brings much the same weather, it remains ok.

Wind

Wind speed in Cagliari in December based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 12 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Cagliari is gradually increasing during December, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during December in Cagliari based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in December stands at 29%, leading to total precipitation of around 46 mm. The maximum amount of rainfall per day is around 28 mm, which is moderate rain. On average, there are about 9 rainy days during December, so prepare to bring an umbrella.
December is one of the rainiest months in Cagliari, here is a comparison with other months, total mm:
Cagliari wettest month is November, where a typical day has a 33% chance of precipitation and 57 mm of rainfall per day. July, on the other hand, is the driest month with a mere 3% chance of precipitation and 1 mm of rainfall per day.

How was the weather last December in Cagliari?

This is the weather in Cagliari in December 2023:
1 December
☀️
+20°C
2 December
☀️
+19°C
3 December
☀️
+14°C
4 December
☀️
+16°C
5 December
☀️
+17°C
6 December
☀️
+14°C
7 December
☀️
+16°C
8 December
🌧️
+15°C
9 December
☁️
+16°C
10 December
☀️
+19°C
11 December
☀️
+19°C
12 December
☀️
+21°C
13 December
☀️
+20°C
14 December
☀️
+15°C
15 December
☀️
+17°C
16 December
☀️
+14°C
17 December
☀️
+14°C
18 December
☀️
+16°C
19 December
☀️
+16°C
20 December
☀️
+15°C
21 December
☀️
+16°C
22 December
☁️
+16°C
23 December
☀️
+16°C
24 December
☀️
+17°C
25 December
☀️
+17°C
26 December
☀️
+16°C
27 December
☀️
+16°C
28 December
☁️
+16°C
29 December
☀️
+17°C
30 December
🌫️
+16°C
31 December
☀️
+18°C
In December 2023 Cagliari had 26 sunny days, 3 cloudy days, and 1 rainy days. The average maximum temperature was +17°C, with an absolute maximum of +21°C and a minimum of +14°C. The average humidity was 79%, with a maximum of 98% and a minimum of 47%. The average wind speed was 4 m/s, with a maximum of 15 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change over Years

This is how Cagliari climate have been changing during last 43 years period.

The climate in Cagliari in December has not changed much over the last 43 years.

The average temperature was the lowest in 1984 (+19°C) and the highest in 2022 (+24°C). The driest year was 1989 with only 134 mm of rainfall, and the wettest year was 2020 with 1145 mm.

FAQ

Frequently asked questions about the weather in Cagliari in December:

Is December a good time to visit Cagliari?

It’s always a good time to visit Cagliari, but the weather is changeable in December, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Cagliari in December?

December has mild temperatures in Cagliari. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Can you swim in Cagliari in December?

In general, you can swim in Cagliari in December, if you want to, at an average water temperature of +16°C. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.

Is Cagliari rainy in December?

Cagliari is often rainy in December. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Cagliari in December?

Usually, it’s not very sunny in Cagliari in December, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Italy

Check out the weather for other cities in Italy.

Monthly weather in Cagliari

Source of the data

For this page, we’ve looked at the typical weather in Cagliari, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.