Cool in Dec
19°C average high
avg high · 8° at night
25°C+ on rarely
Sardinia, Italy
Olbia & Costa Smeralda weather in December
Is it warm? Not really. December in Olbia & Costa Smeralda is cool: afternoons average 16°C and nights 6°C. Most days (80%) peak between 14°C and 19°C.
Cool · average high
16°C
25°C or more on almost no days; 20°C or more on almost no days.
- Average low6°overnight
- Sea16°average, 2022–2025
- Rainy days641 mm in the month
- SkyOften cloudy49% cloud · 29% clear days
How warm it really gets
Every December afternoon from 2011–2025: 465 days. Most (80%) peaked between 14° and 19°.
December, year by year
The average December high in each year. The warmest, 2022, averaged 18°C; the coolest, 2017, 15°C.
Compared with home
Average December highs. Expect rain on about 6 days (41 mm in a typical month).
- Olbia & Costa Smeralda16°
- Cork10°
- London10°
- Dublin9°
- Belfast9°
- Manchester9°
- Glasgow8°
Warmer in December, not much further
Flying times are estimates from Dublin; Olbia & Costa Smeralda is about 2h 45m.
Cool in Dec
18°C average high
avg high · 9° at night
25°C+ on rarely
Cool in Dec
18°C average high
avg high · 11° at night
25°C+ on rarely
Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Olbia airport. Sea: Copernicus ERA5, 2022–2025. Rainy days = days with 1 mm of rain or more, as weather stations count them. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology