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: Tommie Hansen from Stockholm, Sweden · CC BY 2.0Key figures in September
| Criterion | Sicily | Sardinia |
|---|---|---|
| Average daily high | 29 °C | 25 °C |
| Average daily low | 18 °C | 22 °C |
| Sea | 25 °C ★ | 24 °C |
| Rainy days | 8 rainy days (est.) | 6 rainy days (est.) ★ |
| Sun | 6 h/day | 6 h/day |
| Humidity | 64 % | 74 % |
Winner by travel type
Trade-offs
- Sicily is about 4 °C warmer by day.
Sicily or Sardinia in September: the short answer
In September, Sardinia comes out ahead on the overall climate score (Sicily 83/100 vs Sardinia 91/100). 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.
This comparison focuses on September as a representative month for the pair; for any other month, use each destination's month-by-month pages. Across the whole year Sicily averages a climate score of 65/100, Sardinia 68/100. Both profiles below are historical monthly averages, not a forecast.
Weather in September, side by side
The average daily high is about 29 °C in Sicily and 25 °C in Sardinia — warmer in Sicily. Average daily lows are around 18 °C versus 22 °C.
On rain, Sicily sees about 8 rainy days in September and Sardinia about 6 — drier in Sardinia. Sunshine is comparable (6 vs 6 hours a day).
Sea temperature and swimming
In September the water is about 25 °C at Sicily and 24 °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 87 rainy days and Sardinia about 81 — the drier of the two overall is Sardinia. 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: Sardinia scores higher in September (Sicily 91 vs Sardinia 93).
City breaks: Sardinia scores higher in September (Sicily 78 vs Sardinia 93).
Active & hiking: Sardinia scores higher in September (Sicily 64 vs Sardinia 78).
Family: Sardinia scores higher in September (Sicily 90 vs Sardinia 95).
Verdict: which should you pick?
In September, Sardinia leads across every scored category here — the overall score and each travel type — so on the climate data it is the clearer pick this month. Over the year, Sardinia carries the higher overall climate score. Your own priority (sun, sea, low rain or sightseeing comfort) still matters, and the month-by-month pages for each destination give you the full picture before you book.