Cagliari, Sardinia weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: June – September
What is the weather like in Cagliari, Sardinia in December?
In December, Cagliari, Sardinia is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sea averages 16.2 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain falls on about 8 days, adding up to 49 mm. All in all, December is not an ideal month for a holiday in Cagliari, Sardinia.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 31 | 25 | 27 |
| Day | 18° | 15° | 14° |
| Night | 12° | 9° | 8° |
| Sea | 19° | 16° | 15° |
| Sun | 6 h | 6 h | 6 h |
| Rain days | 9 | 8 | 7 |
More details for December
- Daylight
- 9 h 26 min07:36 – 17:02
- UV index
- 2 · lowclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 20 km/haverage daily peak
- Cloud cover
- 52 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Rome
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %50 %
- Few rainy daysweight 20 %73 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- A jumper for the evenings
Cagliari, Sardinia in December: quick answers
Is Cagliari, Sardinia hot in December?
No. In December, Cagliari, Sardinia is cool: daytime highs average 15 °C and nights drop to about 9 °C.
Can you swim in Cagliari, Sardinia in December?
Only if you don't mind cold water: in December the sea averages just 16.2 °C. Comfortable swimming is possible from June to October.
Does it rain much in Cagliari, Sardinia in December?
Rain falls on about 8 days, adding up to 49 mm.
Cagliari, Sardinia month by month
The whole year in Cagliari, SardiniaAll destinations: Italy
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)