Cagliari Weather in September

Warm days by the sea

September is one of the best months to visit Cagliari, and our comfort score rates it excellent at 9.8/10. The summer heat has eased since August, so days still feel warm, with highs around 26°C and nights near 22°C. You'll get plenty of sunshine, though rain can interrupt plans on some days, so keep a flexible backup for those.

Once you're settled in, the month suits the classics: Poetto Beach, a stroll through Castello, or a boat trip around the Gulf of Cagliari. The sea is still inviting, and the cooler feel makes sightseeing easier than in August. Long uphill walks in the midday sun can still tire you out, so save the climb to the Bastione di Saint Remy for later in the day.

Events and day trips

September isn't known for a major citywide festival in Cagliari. Sant'Efisio, the city's famous procession, takes place in May, not September. If you want a seasonal event, look for Autunno in Barbagia. Village festivals begin around this time in inland Sardinia, though they're a day trip from the city.

Families who want beach time without peak-summer heat may find September suits them well. Poetto stays lively, but the busiest school-holiday period is already fading.

Quieter, but not cheap

As the summer crowds thin, you'll notice more room at Poetto and around the Marina quarter. Prices often ease from the summer peak, but September is still part of the long May-to-October travel season, so it's busier and pricier than October, when days are cooler and rain is heavier.

A local tip: take the CTM bus to Poetto, then walk toward the salt pans at Molentargius. Flamingos feed there, and the flat path makes a gentle change from the old town's steep lanes. Check the path after rain, as puddles can linger.