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Which is better: Caldas Novas or Foz do Iguaçu?

Short answer

Caldas Novas is in the state of Goiás (GO), while Foz do Iguaçu is in Western Paraná (PR): different regions of Brazil. Caldas Novas: the largest hot springs in the world; Foz do Iguaçu: around 275 waterfalls on the border of three countries, with the Itaipu power plant a few kilometers away. For this month's weather, Foz do Iguaçu has the edge.

Sources: INMET (updated 2026) · ANP · OpenStreetMap
Most reviewed activity in Foz do IguaçuIguazú Falls Argentine Side Tour★ 8.5 · 166 reviews · from US$ 44 · via CivitatisSee dates and price →
Caldas Novas Foz do Iguaçu
Best time to visit May → Aug Mar → Sep
Weather this month 33° · 11 days of rain 30° · 10 days of rain
By car R$ 113 · from Goiânia R$ 484 · from Curitiba
Ideal stay 3–4 days 3–4 days
Best for Family, Relax, Romantic Family, Adventure
Choose Caldas Novas if

you want a trip for families and relaxation: naturally hot pools, water parks and the perfect contrast of a dry Cerrado winter.

See guide
Choose Foz do Iguaçu if

you want a trip for families and adventure seekers: around 275 waterfalls on the border of three countries, with the Itaipu power plant a few kilometers away.

See guide
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Where to stay

Where to stay: Caldas Novas or Foz do Iguaçu

The average nightly rate is around R$ 298 in Caldas Novas and R$ 678 in Foz do Iguaçu; what changes in practice is each place's season. Check current prices for your dates before deciding.

Compare hotels and places to stay in Caldas Novas on Booking.com, with up-to-date prices and availability, before you book.

Best Western Suites Le Jardin Caldas Novas in Caldas Novas 9 · 26 reviews Best Western Suites Le Jardin Caldas Novas See on Booking → Acqua Bella Thermas Hotel in Caldas Novas 8.7 ★★★ · 39 reviews Acqua Bella Thermas Hotel See on Booking →
See all hotels in Caldas Novas

Compare hotels and places to stay in Foz do Iguaçu on Booking.com, with up-to-date prices and availability, before you book.

Hotel das Cataratas, A Belmond Hotel, Iguassu Falls in Foz do Iguaçu 9.4 ★★★★★ · 141 reviews Hotel das Cataratas, A Belmond Hotel, Iguassu Falls See on Booking → JL Hotel by Bourbon in Foz do Iguaçu 9.1 ★★★★ · 382 reviews JL Hotel by Bourbon See on Booking →
See all hotels in Foz do Iguaçu

Rates change with the dates: confirm the price on Booking.com.

Frequently asked questions

Caldas Novas or Foz do Iguaçu: which is better?
Caldas Novas is in the state of Goiás (GO), while Foz do Iguaçu is in Western Paraná (PR): different regions of Brazil. Caldas Novas: the largest hot springs in the world; Foz do Iguaçu: around 275 waterfalls on the border of three countries, with the Itaipu power plant a few kilometers away. For this month's weather, Foz do Iguaçu has the edge.
What is the best time to visit Caldas Novas and Foz do Iguaçu?
The best time to visit Caldas Novas is from May to August; for Foz do Iguaçu, it is from March to September, based on INMET's climate normals (temperature and rainfall for each month). If your trip already has a date, check each destination's page for your month.
Which of the two is cheaper to get to?
By car, leaving from Goiânia, Caldas Novas is 170 km (106 mi) and costs about R$ 113 each way (fuel plus tolls); leaving from Curitiba, Foz do Iguaçu is 640 km (398 mi) and costs about R$ 484 each way (fuel plus tolls). The calculation assumes a car that gets 11 km/L. Lodging and activities vary with each place's season.
Where does it rain less, Caldas Novas or Foz do Iguaçu?
Averaged over the year, Caldas Novas has 9 rainy days a month and Foz do Iguaçu has 9. The two are practically tied over the year, but what decides the trip is the month: the rainiest month in Caldas Novas is December and in Foz do Iguaçu, October. For temperature, Caldas Novas is the warmer one (average high of 31° versus 29°).
How many days should you spend in Caldas Novas and in Foz do Iguaçu?
To see the main sights without rushing, Caldas Novas calls for 3–4 days and Foz do Iguaçu, 3–4 days. These are distant regions: with a week or less, it is usually better to pick one of the two and make the most of it.
Caldas Novas or Foz do Iguaçu with kids?
Both work with kids: Caldas Novas (hot springs, hot pools, and water parks) and Foz do Iguaçu (275 waterfalls, triple border, and UNESCO national park). The choice usually comes down to getting there, not to infrastructure.
What should you not miss in each?
In Caldas Novas: Hot Park, diRoma Acqua Park, Lagoa Termas Parque. In Foz do Iguaçu: Iguazu Falls, Brazilian side, Devil's Throat, Argentine side, Puerto Iguazú. These are the sights that show up most in first-trip itineraries for each destination; the full guide to each has the whole list.