September · Italy
Best time to visit Ischia in September Weather, crowds & prices
Weather in Ischia in September
Average temperature 25°C, 69 mm of rain, about 19 days with 6+ hours of sunshine and 72% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.7/10
Ranked #4 of 12 months
- Avg temp
- 25°C
- Rainfall
- 69 mm
- Humidity
- 72%
- Days with 6h+ sun
- 19
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Ischia scores 8.7/10 for beach and coastal travel - an above-average month (#4 of 12). Expect around 25°C, 69 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
Thermal spas, volcanic beaches, and Aragonese Castle views suit May through October best, with June and September ideal for swimming and spa days without Naples Bay August crowds.
September ranks 4th of 12 for Ischia — one of the best windows
With 25°C (76°F) on average, September delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
Budget for roughly 69 mm of rain this month — a flexible day or two helps — with about 19 days with 6+ hours of sunshine and 12.3 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Ischia at 8.7/10 (4th of 12), just behind July at 9.8/10.
Pack light clothing, swimwear and real sun protection, a packable rain layer.
Budget for mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Ischia in September?
- In September, Ischia averages 25°C, 69 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 8.7/10.
- Is September a good time to visit Ischia?
- September earns a 8.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Ischia in September?
- Expect about 69 mm of rain in September. Average humidity is 72% and there are about 19 days with 6+ hours of sunshine.
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