Sardinia weather in December
December in Sardinia averages daytime highs of 14.4°C and nights around 7.6°C, with about 7 hours of sunshine a day. The sea averages 16.5°C: cold, for hardy swimmers only. This is one of the wetter months, with about 9 rainy days and around 65 mm of rain, so pack a layer for showers, and winter sun is gentle (average peak UV 2).
Weather data by Open-Meteo.com (CC BY 4.0). Figures are ten-year averages from the historical record.
What December feels like
December is crisp, bright and gently festive. Christmas markets and nativity scenes appear in the towns, the Gennargentu often takes a dusting of snow, and clear days deliver some of the year's sharpest coastal light. The sea is for looking at, the table is for sitting at, and the island feels entirely its own. A fine month for city breaks in Cagliari or Alghero.
What to do in Sardinia in December
Sardinia in December: quick answers
December elsewhere on the island
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