Ischia Weather in December
December in Ischia averages 16°C (61°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 137 mm (5.4 in) on average. An umbrella is a good idea.
Rainfall in Ischia in December
On average, there are about 15 days with rain during this month, averaging 137 mm (5.4 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Ischia in December
December in Ischia sees highs of 16°C (61°F) and lows of 12°C (54°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Ischia in December
The city usually sees around 105 hours of sunlight, indicating a moderately sunny period.
Average water temperature in December
The water temperature is 16°C (61°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Ischia. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Italy, check out our Ischia's climate page.
Ischia Temperature in December
Min Temperature
12°C (54°F)
Max Temperature
16°C (61°F)
Water Temperature
16°C (61°F)
Chance of Rain
49%
Precipitation
137 mm (5.4 in)
Rainy days
15 days
Sunshine
105 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ischia typically stay consistent throughout December, with daily highs averaging around 16°C (61°F). Nights are cold, with lows typically ranging from 5°C (41°F) to 8°C (46°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Ischia in December
Browse day-by-day weather records for Ischia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ischia historical weather extremes in December
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Ischia.
- Ischia recorded its highest December temperature of 22°C (72°F) on December 18, 1989.
- On December 16, 1988, Ischia saw its coldest December day with temperatures maxing out at 2°C (36°F).
- The lowest overnight temperature recorded in December was -4°C (25°F) (December 26, 1986).
Best Places in Italy in December
Find out more about the weather in Italy and which places have the best travel conditions in this month. See all of Italy in December →
perfect weather
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tolerable
unpleasant
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What to Wear in Ischia in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 16°C (61°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Ischia in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Italy, check out our Ischia's climate page.
Temperature Rainfall Sunshine Water Temp
See the full Ischia climate overview or explore weather in Italy.
