Best Thermal Baths in Ischia

Ischia is Europe's thermal capital — an island with more hot springs per square kilometre than anywhere in the Mediterranean. The thermal parks here are outdoor wellness paradises.

Giardini Poseidon Terme

Must-DoIconic
22 thermal poolsPools
28–40°CTemperature
€35 full dayCost

The largest and most famous thermal park on Ischia — 22 pools cascading down to a private beach in Forio. Each pool has a different temperature and mineral composition. Japanese garden, sauna cave, and Kneipp path. The full-day experience.

Negombo Thermal Park

Must-Do
12 poolsPools
28–38°CTemperature
€34 full dayCost

The most beautifully landscaped thermal park — Mediterranean and Japanese gardens, contemporary art installations, and a stunning bay beach. In San Montano bay near Lacco Ameno. More intimate than Poseidon.

Castiglione Terme

Family
10 poolsPools
30–40°CTemperature
€27 full dayCost

The most family-friendly thermal park with a kids' pool, waterslide, and broad terraces overlooking Ischia Porto. Easy to reach by bus from the main harbour. Less crowded and slightly cheaper than Poseidon.

Sorgeto Hot Springs (Wild)

Must-DoBudget
Natural sea poolsPools
Up to 90°C at sourceTemperature
FreeCost

Hot volcanic water bubbles directly into the sea at this rocky cove in Panza. Mix hot and cold water to find your perfect temperature. Access via 234 steps (or boat from Sant'Angelo). Free, open 24/7 — especially magical at night.

Terme di Cavascura

Hidden Gem
Natural cave poolsPools
38–42°CTemperature
€15–25Cost

A Roman-era thermal site in a narrow ravine near Sant'Angelo. Natural stone pools carved into the rock, a hot waterfall, and clay mud treatments. The most atmospheric bath on the island — like stepping back 2,000 years.

💡 Pro tip: Visit a thermal park in the morning for the calmest experience. Afternoon gets busy with day-trippers from Naples. Most parks include beach access.
⚠️ Heads up: The free Sorgeto springs are VERY hot at the source — water temperature can reach 90°C where it emerges. Test with your hand before stepping in. Mix with seawater.

Our pick

Poseidon for the full thermal day. Sorgeto at night under the stars for magic. Cavascura for the most memorable atmosphere.

Ischia hotelsIschia toursFerries to Ischia

More activity guides

All Italy thermalsFree thermalsBest spasBoat tours

Plan your perfect Italy trip

Custom itineraries, insider tips, and local secrets — all free.

Start planning →