Measurements:
°C
°F
CURRENT WEATHER
10:12
Ischia
62°F
W 5 mph
Feels like: 62°F
Precip: 0%
World Resorts Italy Ischia Weather

7 Day Weather Forecast

12.18
thu
DAY
62°F
W 6 mph
precip
0%
NIGHT
62°F
SW 6 mph
precip
0%
12.19
fri
DAY
60°F
SW 4 mph
precip
0%
NIGHT
60°F
SW 6 mph
precip
0%
12.20
sat
DAY
58°F
W 6 mph
precip
0%
NIGHT
60°F
SW 10 mph
precip
0%
12.21
sun
DAY
60°F
W 8 mph
precip
0%
NIGHT
58°F
NW 17 mph
precip
100%
12.22
mon
DAY
60°F
NW 17 mph
precip
100%
NIGHT
62°F
N 17 mph
precip
100%
12.23
tue
DAY
60°F
N 19 mph
precip
100%
NIGHT
60°F
NE 21 mph
precip
100%
12.24
wed
DAY
60°F
E 16 mph
precip
100%
NIGHT
60°F
N 8 mph
precip
100%

Ischia Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Ischia was 17.8°F. The maximum and minimum values were 17.6°F and 18.2°F respectively.

Ischia on the Weather Map

Best Time to Visit Ischia
The most sunny months:
July 28 days
August 27 days
June 26 days
The most warm months:
August 85.9 °F
July 85.0 °F
September 80.0 °F
Warmest sea temperature:
August 83.9 °F
July 82.6 °F
September 80.2 °F
The most cold months:
January 55.6 °F
February 55.9 °F
March 58.3 °F
The most rainy months:
November 8 days
January 6 days
December 6 days
The most windy months:
January 12 mph
November 11 mph
February 11 mph
more details