IschiaPhoto: Sailko · CC BY-SA 4.0Italy · Europe
Best time to visit Ischia
Ischia combines beaches with thermal gardens and green landscapes. Mild winters and warm summers; the sea is warm from June to October.
Climate decision
Best travel months for Ischia
Top recommendation
Next highest scores
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Latest 5-year values 2021–2025
Average of the five most recent complete years compared with the 1991–2025 climate average.
December · Wet days
9 days/month
1991–2025: 13.3 days/month
-4.3 days/month · lower
July · Mean daily maximum
27.1 °C
1991–2025: 25.6 °C
+1.5 °C · higher
April · Monthly precipitation
23.9 mm/month
1991–2025: 57.4 mm/month
-33.4 mm/month · lower
August · Sea temperature
27.4 °C
1991–2025: 26.4 °C
+1 °C · higher
July: 2/155 days at or above 30 °C; highest single value 30.4 °C.
Five-year historical sample, not a weather forecast or long-term climate trend. Individual hot days can be far above the monthly mean.
Annual profile · Coast and sea
Ischia: the swimming season follows two curves
Average daily highs vary by 13 °C through the year, while the sea varies by 12 °C. Air and water temperature should therefore be considered separately.
The practical difference
The month with the highest daytime temperature and the month with the warmest sea need not define the same travel window. Rain and sunshine help resolve the trade-off.
Warmest sea
August · 26.4 °C
Highest average daily high
August · 26.4 °C
Fewest rainy days
July · 4.1
Most sunshine
July · 9.4 h
Month by month
Overall suitability per month. Tap a month for details.
All climate figures compared
The table is the complete accessible data view; the charts below highlight selected patterns.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Rain mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| January | 14 | 12 | 12 | 89 | 2.4 | 74 | 5.3 | 15 | 38 |
| February | 13 | 12 | 11 | 75 | 3.6 | 74 | 5.1 | 14 | 41 |
| March | 14 | 13 | 10 | 65 | 5.2 | 77 | 4.7 | 14 | 46 |
| April | 16 | 14 | 9 | 57 | 6.8 | 80 | 4.1 | 16 | 53 |
| May | 19 | 18 | 7 | 40 | 8.3 | 80 | 3.6 | 19 | 71 |
| June | 23 | 22 | 6 | 28 | 9.3 | 79 | 3.3 | 23 | 89 |
| July | 26 | 25 | 4 | 19 | 9.4 | 77 | 3.4 | 25 | 93 |
| August | 26 | 25 | 7 | 29 | 8.2 | 76 | 3.2 | 26 | 90 |
| September | 24 | 23 | 11 | 79 | 6.2 | 73 | 3.7 | 24 | 83 |
| October | 21 | 20 | 12 | 98 | 4.3 | 75 | 4.1 | 22 | 72 |
| November | 18 | 17 | 15 | 135 | 2.7 | 75 | 5.1 | 19 | 52 |
| December | 15 | 14 | 13 | 101 | 2.1 | 73 | 5.4 | 17 | 41 |
Climate through the year
Compare temperature, rainy days, sunshine and, for coastal destinations, sea temperature month by month.
Find a place to stay
Where to stay in Ischia
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Useful next decisions
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The number is the overall climate score, not a similarity score.
Country and region
Frequently asked questions
When is the best time to visit Ischia?
The strongest climate months are June, July, August, September. Values are historical averages, not a forecast.
Which month has the highest average daily maximum temperature in Ischia?
The average daily maximum temperature in Ischia is highest in August at around 26 °C.
When is the sea warmest at Ischia?
In August, at around 26 °C.