Ischia Temperature by Month
Ischia, Campania, Italy has an average annual maximum temperature of 20°C (68°F), ranging from 14°C (57°F) in February to 28°C (82°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Ischia Monthly Temperatures
Depending on the time of the year, temperatures range from comfortable to mild in Ischia. At night, minimum temperatures range from 24°C (75°F) in August to 10°C (50°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Ischia by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 300 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Ischia Temperatures: 1976-2026
Browse day-by-day temperature records for Ischia spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Ischia vs Italy
The map below shows the annual temperature across Italy. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
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Ischia vs World: Temperature Compared
Ischia's average annual maximum temperature is 20°C (68°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Ischia's weather — including monthly rainfall, sunshine hours, and humidity — visit our Ischia climate page.
