Founded as a Phoenician trading post in the 8th-7th century BC, Cagliari became capital of the Kingdom of Sardinia in 1324 and still centres on Castello, a walled hilltop quarter above the harbour. Sardinia is an autonomous Italian region with its own recognised language, reached mainly by ferry or by Elmas Airport's 5.25 million annual passengers. The island's early computing scene, grown from research centre CRS4, which built Italy's first website in 1991, produced Tiscali, the ISP still headquartered at its own campus here. Eight kilometres of Poetto beach line one side of downtown; wild flamingos nest year-round in the Molentargius lagoon a few minutes from the other.
Nights sit around 18°C and afternoons around 29°C, though some days reach 32°C.
Cagliari has real seasons: summer afternoons sit around 32°C, winter ones around 16°C.
Some summer days reach 37°C, and some winter nights drop to 1°C.
Most of the rain falls in autumn, least in summer. The wettest month is November, with 70 mm.
Air quality is worth watching: February averages an AQI of 53, while October clears to 37.
Days stretch to about 14.7 hours of light in June and shrink to 9.3 in December — something to weigh if you work to a fixed timezone.
For what you're after, the best months in Cagliari are June – September. Expect fast internet (373 Mbps) and a high cost of living (about €1700 a month).
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