Cagliari & Campidano weather in March
March in Cagliari & Campidano averages daytime highs of 17.3°C and nights around 9.3°C, with about 10 hours of sunshine a day. The sea averages 15.3°C: cold, for hardy swimmers only. This is one of the wetter months, with about 8 rainy days and around 48 mm of rain, so pack a layer for showers, and UV sits at a moderate 6, kind enough for long days outside.
Weather data by Open-Meteo.com (CC BY 4.0). Figures are ten-year averages from the historical record.
What March feels like
March is when the island turns green and the year properly wakes up. Wildflowers start in the south and creep north, walking trails dry out, and the first pavement-café afternoons arrive. The sea remains wintry and the weather can still turn, but between fronts you get luminous days made for ruins, coastal paths and quiet towns. Prices and crowds are as low as they get. Around Cagliari and the Campidano the capital anchors everything, with Poetto's long beach and the south coast an easy reach away.
What to do in Cagliari & Campidano in March
Cagliari & Campidano in March: quick answers
March elsewhere on the island
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