Oristanese & Sinis weather in December
December in Oristanese & Sinis averages daytime highs of 14.8°C and nights around 6.8°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 10 rainy days and around 85 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. In the Oristanese and Sinis it is lagoons and flamingos, quartz-sand beaches and the Phoenician ruins of Tharros.
What to do in Oristanese & Sinis in December
Oristanese & Sinis in December: quick answers
December elsewhere on the island
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