The best time to visit Sardinia
The best time to visit Sardinia for warm, sunny weather is May to August, when its destinations average a Sunshine Score of 88/100 with daytime highs around 28°C / 82°F. April and September 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 | 38 | 13° / 55°F | 57 mm | 15° | Mixed |
| February | 41 | 14° / 57°F | 50 mm | 14° | Good |
| March | 56 | 16° / 61°F | 45 mm | 15° | Very good |
| April | 80 | 19° / 66°F | 46 mm | 16° | Excellent |
| May | 88 | 23° / 73°F | 37 mm | 19° | Excellent |
| June | 93 | 28° / 82°F | 14 mm | 22° | Excellent |
| July | 85 | 31° / 88°F | 5 mm | 25° | Excellent |
| August | 87 | 31° / 88°F | 12 mm | 27° | Excellent |
| September | 88 | 27° / 81°F | 41 mm | 24° | Excellent |
| October | 85 | 23° / 73°F | 57 mm | 22° | Excellent |
| November | 68 | 18° / 64°F | 88 mm | 20° | Very good |
| December | 49 | 15° / 59°F | 67 mm | 16° | Good |
When to go — and when to think twice
Best overall: May to August — Sardinia's warmest, most reliable stretch (Sunshine Score 88/100, ~28°C / 82°F days). Shoulder season: April and September — quieter, still sunny. Hottest: July, ~31°C / 88°F. Wettest: November (88 mm) — pack for showers.
Where to base yourself for sunshine: Alghero (2,842 h/yr), Cagliari (2,787 h/yr), Olbia (SS) (2,705 h/yr). Open any of its destinations: Alghero · Cagliari · Olbia (SS).