Climate Change Chart of Ischia, Italy

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +2.07 °C in the more recent reference period. This is an unweighted comparison of monthly means, not a day-weighted annual average, and it does not describe every month or daytime maximum temperatures. The largest monthly increase was in January, with a difference of +3.48 °C. That marks the strongest reported monthly rise, rather than a measure of how warm daytime conditions were.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of -0.19 mm/day. This is a small overall decrease in the monthly averages, not evidence that rainfall declined in every month or that monthly totals fell by that amount. The largest monthly decrease was in October, at a difference of -1.86 mm/day, while March had the largest increase, at +1.37 mm/day. These daily-mean changes show that rainfall differences were not uniform across the calendar; they do not establish how many rainy days occurred.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference of -0.05 hours/day. The largest monthly decrease was in March, with a difference of -0.61 hours/day, whereas the largest increase was in December, at +0.48 hours/day. These averages describe daily sunshine duration, not guaranteed sunshine on a particular visit.