Olbia (Costa Smeralda) weather in December
December in Olbia: cool, a little rain, with clean air — a good time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#11 of 12 months in Olbia · #965 of 1413 destinations to visit in December · comfort 61/100 (tier C)
- Days
- 17°C
- Nights
- 7°C
- Wet days
- 9
- Sun
- 7.1 h
- Humidity
- 81%
- Daylight
- 9 h
Traveller notes on Olbia in December
Other months in Olbia
Sardinia's forum describes January as the island's coolest month but genuinely variable - some posters had lovely sunny days with cold, clear nights (no cloud cover to trap any warmth), while others visiting in the same general window hit cold, wet and windy stretches instead. A clear midday can reach a pleasant high-teens C before dropping off fast into the afternoon and evening, but freezing temperatures are unlikely on the coast around Olbia. It's not remotely beach weather, but a mild, walkable winter month when you catch the good days.
Forum posters describe July around Olbia and northern Sardinia as very pleasant for swimming, with daytime temperatures usually above 30C and sea temperatures around 24-25C, though posters flag a real risk of jellyfish this time of year. Posters consistently recommend packing a light wind or rain jacket and a light sweater for the evening despite the summer heat, since coastal evenings can turn noticeably cool. Posters also note Sardinia runs windier in summer than other seasons, a real factor for anyone planning beach days or boat trips. Posters generally rate July as calmer and less crowded than August, making it their preferred pick between the two peak summer months.
Add your own note from Olbia's card on the map.
Olbia climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Olbia in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyChristmas holidays in Italy, school holidays in 6 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Olbia's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherOlbia's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Olbia in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Costa Smeralda shuts
15 Oct – 30 AprOff-season shutdownClosuresPorto Cervo and the resort villages close down almost completely and Olbia carries on as an ordinary working port town. Good for the Gallura interior and the nuraghi, no use at all for a beach holiday.
- Season
Maestrale
1 Nov – 30 Apr · usuallyWind seasonRiskThe northwesterly arrives hardest in the cold half of the year and can cancel the Corsica and mainland ferries for a day. It leaves clear air and a hard blue sky behind it.
Nearby, and something's on
Within 300 km of Olbia — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Olbia?
Olbia in December — FAQ
- Is December a good time to visit Olbia?
- December in Olbia: cool, a little rain, with clean air — a good time to visit. It ranks #11 of 12 months for Olbia on SeasonMap's comfort score (61/100).
- What is the weather like in Olbia in December?
- In December, Olbia averages a daily high of 16.6°C and a low of 6.7°C, with about 55 mm of rain over roughly 9.1 rainy days.
- What is the air quality in Olbia in December?
- Olbia has a mean US Air Quality Index of about 30 in December.
Within 300 km: Rome's Befana market, Piazza Navona on 8 Dec – 6 Jan, and Vatican City's Christmas in St Peter's Square on 8 Dec – 6 Jan.