Sicily or Sardinia in September?
On climate data, Sardinia comes out ahead overall in September. See the per-criterion details below.
SicilyPhoto: Krzysztof Popławski · CC BY-SA 4.0
SardiniaPhoto: Damiano Luchetti · Public domainKey figures in September
| Criterion | Sicily | Sardinia |
|---|---|---|
| Day | 28 °C ★ | 25 °C |
| Night | 18 °C | 22 °C ★ |
| Sea | 25 °C ★ | 25 °C |
| Rainy days | 4 rainy days | 4 rainy days |
| Sun | 6 h/day | 6 h/day ★ |
Winner by travel type
Trade-offs
- Sicily is about 3 °C warmer by day.
Sicily or Sardinia in September: the short answer
In September, Sardinia comes out ahead on the overall climate score (Sicily 89/100 vs Sardinia 93/100). That is a snapshot of one month, though — which one truly fits depends on what you want from the trip, so the breakdown below goes criterion by criterion.
Across the whole year Sicily averages a climate score of 68/100, Sardinia 71/100. Both profiles below are historical monthly averages, not a forecast.
Weather in September, side by side
By day, Sicily sits near 28 °C and Sardinia near 25 °C — warmer in Sicily. At night it is roughly 18 °C versus 22 °C.
On rain, Sicily sees about 4 rainy days in September and Sardinia about 4. Sardinia gets more sunshine (6 vs 6 hours a day).
Sea temperature and swimming
In September the water is about 25 °C at Sicily and 25 °C at Sardinia — warmer for swimming at Sicily. Over the year, Sicily is comfortable for swimming (from ~21 °C) in June, July, August, September and October, Sardinia in June, July, August, September and October. Peak sea warmth is August for Sicily and August for Sardinia.
Rain and sun across the year
Over a full year Sicily records roughly 60 rainy days and Sardinia about 61 — the drier of the two overall is Sicily. At their sunniest, Sicily reaches about 9 hours of sun a day (July) and Sardinia about 9 (July). If dependable dry, sunny weather is your top priority, weigh these annual totals alongside the single month above.
Best time to visit each
Climatically, Sicily is at its best in May, June, September and October, while Sardinia peaks in June, July, August and September. If your dates are fixed, pick the destination whose strong season overlaps them; if you are flexible, plan around these windows.
Which suits which kind of trip
Based on the September scores for each travel style:
Beach & swimming: Sicily scores higher in September.
City breaks: Sardinia scores higher in September.
Active & hiking: Sardinia scores higher in September.
Family: Sardinia scores higher in September.
Verdict: which should you pick?
There is no single winner — it depends on your month and your priority. For September specifically, use the head-to-head above; over the year, Sardinia carries the slightly higher overall climate score. Choose Sicily if its strong months and profile match your plan, Sardinia if its do. The month-by-month pages for each destination give you the full picture before you book.