The best time to visit Sardinia
The best time to visit Sardinia for warm, sunny weather is June to September, when its destinations average a Sunshine Score of 89/100 with daytime highs around 27°C / 81°F. May and October are quieter shoulder-season alternatives with still-reliable sun. The sea is swimmable (21°C+) about 5 months a year, warmest in August at 27°C.
Sardinia by month, averaged across 3 destinations from long-term climate normals — the best stretch is highlighted.
| Month | Sunshine Score | Avg day high | Rain | Sea | For a trip |
|---|---|---|---|---|---|
| January | 30 | 12° / 54°F | 57 mm | 15° | Mixed |
| February | 28 | 12° / 54°F | 50 mm | 14° | Mixed |
| March | 48 | 15° / 59°F | 45 mm | 15° | Good |
| April | 69 | 18° / 64°F | 46 mm | 16° | Very good |
| May | 83 | 21° / 70°F | 37 mm | 19° | Excellent |
| June | 91 | 26° / 79°F | 14 mm | 22° | Excellent |
| July | 87 | 29° / 84°F | 5 mm | 25° | Excellent |
| August | 89 | 29° / 84°F | 12 mm | 27° | Excellent |
| September | 87 | 25° / 77°F | 41 mm | 24° | Excellent |
| October | 84 | 22° / 72°F | 57 mm | 22° | Excellent |
| November | 56 | 17° / 63°F | 88 mm | 20° | Very good |
| December | 37 | 13° / 55°F | 67 mm | 16° | Mixed |
When to go — and when to think twice
Best overall: June to September — Sardinia's warmest, most reliable stretch (Sunshine Score 89/100, ~27°C / 81°F days). Shoulder season: May and October — quieter, still sunny. Hottest: July, ~29°C / 84°F. Wettest: November (88 mm) — pack for showers.
Where to base yourself for sunshine: Cagliari (2,726 h/yr), Alghero (2,497 h/yr), Olbia (SS) (2,497 h/yr). Open any of its destinations: Cagliari · Alghero · Olbia (SS).