Italy
Ischia in September: weather, sea & travel advice
This month's data profile
Sea conditions lead
Ischia in September is climatically well suited to city breaks, family holidays, beach holidays and active holidays and hiking. The average daily high is around 24 °C, and the sea is about 24 °C. With about 11 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
83/100 · #4
Warmth
#3
Dryness
#8
Sun
#6
Sea warmth
#3
Published best categories: Overall, Beach, Family
Ischia · SeptemberPhoto: Sailko · CC BY-SA 4.0Climate facts
- Average high
- 24 °C
- Average low
- 23 °C
- Sea
- 24 °C
- Rainy days (est.)
- 11 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 73 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 26 | 25 | 7 | 29 | 8.2 | 76 | 3.2 | 26 | 90 |
| September (selected) | 24 | 23 | 11 | 79 | 6.2 | 73 | 3.7 | 24 | 83 |
| October | 21 | 20 | 12 | 98 | 4.3 | 75 | 4.1 | 22 | 72 |
How do the previous and next months compare?
Baseline: September (83/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | +7 | +2.1 °C | +2.3 °C | -4.3 | -49.7 mm | +2 h | +3.1 % | -0.5 m/s | +1.9 °C |
| October | -11 | -2.8 °C | -2.9 °C | +1.3 | +19.4 mm | -1.9 h | +2 % | +0.4 m/s | -2.6 °C |
All twelve months in context
Find a place to stay
Where to stay in Ischia
Compare available stays, prices and cancellation terms for Ischia on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Ischia in September?
The average daily high is around 24 °C, with an average daily low of about 23 °C.
Can you swim in Ischia in September?
The sea is about 24 °C (warm).
Does it rain a lot in Ischia in September?
The curated estimate is about 11 rainy days per month, not a directly measured long-term average. Total precipitation averages around 79 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Ischia?
By the climate score, June, July, August and September are the strongest months for Ischia. For a beach trip: June, July, August and September. September is one of them.