Sardinia · Month comparison
September vs May
May ranks #1 overall vs September at #2. Sant Efisio fills Cagliari with traditional costumes — the islands single best week.
September
#2 of 12 months
Best match
The connoisseurs month — warmest sea (24C), Italian schools back, hotel prices retreating 40% from mid-month.
- ↑Sea peaks at 24-25C with calmer winds than summer
- ↑Cala Goloritze and other permit beaches drop to walk-up availability after the first week
May
#1 of 12 months
Best match
Sant Efisio fills Cagliari with traditional costumes — the islands single best week.
- ↑Sant Efisio procession on 1-4 May draws 3,000+ traditional costumes from every Sardinian town to Cagliari
- ↑22C, 9 hours sun and beaches empty — Costa del Sud and Villasimius coves can be yours alone
| Factor | September | May |
|---|---|---|
| Weather score | 10 | 9 |
| Value score | 6 | 7 |
| Crowd score | 5 | 7 |
| Events score | 8 | 8 |
| Atmosphere | 10 | 9 |
| Avg high temp | 27°C | 22°C |
| Monthly rain | 30mm | 25mm |
| Daily sunshine | 9hrs | 9hrs |
September trade-offs
- ↓First two weeks essentially August prices
- ↓Storm risk creeping back — late September can deliver sudden 30mm downpours
May trade-offs
- ↓Sea at 18C — viable but cold-shock on entry
- ↓Mistral wind picks up in late May and can blow out east coast beach days
Scores compare months within Sardinia. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →