Caldeira Velha Hot Springs Guide – Tickets & Time‑Slot Entry

The thermal springs and pools of Caldeira Velha are located in the heart of São Miguel, the largest island of the Azores. These hot springs, nestled in a rainforest of giant fern trees, are a natural wonder that attracts visitors from around the world. Because of their ecological importance, the area became a Nature Reserve in 2008.

Caldeira Velha is a geothermal phenomenon close to Lagoa do Fogo. The Azores are of volcanic origin, and several volcanoes on São Miguel remain active. Caldeira Velha lies on the northern flank of the Fogo volcano, surrounded by lush vegetation that feels almost like New Zealand.

What to Expect & How to Plan Your Visit

I’ll give you all the essential information on how to secure your time‑slot ticket, the best time to visit, the water temperatures of each pool, and what to bring to this fantastic place on São Miguel.

Caldeira Velha is a must‑visit, but you need to book your ticket in advance — otherwise, you may wait for hours. We once passed by accident, and all tickets were sold out. A kind group from Lisbon had two spare tickets, and we were lucky enough to join them.

The geothermal pools have long been popular with visitors seeking relief from various ailments. Many believed the iron‑rich water could help with arthritis or respiratory problems. Keep in mind that the minerals may react with jewellery and can stain swimwear.

👉 Photo high resolution

The Interpretation Centre in the middle of the park explains how the Azores formed, highlights volcanic activity across the islands, and shows how geothermal steam is used to produce electricity. The exhibition is well done and available in Portuguese and English.

Parking at Caldeira Velha

The newly built parking lot at Caldeira Velha offers ample space, and it’s only a five‑minute walk to the entrance. In former times, the parking area was often full, but today the visitor flow is regulated through time‑slot tickets, so parking is usually straightforward. You can find the exact location on Caldeira Velha Parking via Google Maps.

Opening Hours

Caldeira Velha is open daily, with longer hours in summer and shorter hours in winter. From May to September, the site opens from 9:00 to 20:30. In October and April, opening hours are 9:00 to 18:30, and from November to March, the reserve closes earlier at 17:00.

Entry Tickets & Fees

There are two types of tickets. A simple visit ticket allows access to the rainforest, pools and the reserve without bathing; this option costs 3 € for adults and 1 € for children. The full bathing ticket, which I highly recommend, costs 10 € for adults and 5 € for children, and these prices have remained unchanged for years.

Online Tickets & Time‑Slot Entry

Caldeira Velha operates with strict time‑slot entry and a visitor limit of 100 people per 1.5 hours. You can buy tickets at the counter if slots are not sold out, but it’s much safer to book online in advance. At the entrance, you receive a coloured wristband indicating when your time slot ends. To avoid disappointment, book your ticket at least one day ahead — ideally two — because Caldeira Velha is extremely popular and absolutely worth visiting. Use the official booking page via Caldeira Velha Tickets.

Facilities Inside the Park

Inside the reserve, you’ll find two changing cabins, restrooms, showers and lockers (2 € fee). You can either store your valuables or keep them with you. Plenty of benches are available to leave your bag or simply sit and enjoy the lush rainforest atmosphere. The facilities are well maintained and blend beautifully into the natural surroundings.

Access for People With Disabilities

Opposite the entrance, there is a small parking area reserved for taxis and visitors with disabilities, allowing easier access to the site Google Maps. After passing the entrance gate, a paved and cobbled path leads through the reserve, and this main walkway is accessible for wheelchairs. While the pools themselves are not fully barrier‑free, people with disabilities can still get a closer look at the geothermal area and enjoy the lush rainforest surroundings of Caldeira Velha.

Fumaroles and the Three Thermal Pools

Caldeira Velha lies in the middle of a lush rainforest and is one of the most atmospheric places to enjoy the geothermal beauty of São Miguel. Before reaching the second pool, you cross a wooden bridge over a bubbling pond heated by fumaroles. You can smell the sulphur, and the rising steam is a clear sign of volcanic activity. These fumaroles are small openings in the earth — cracks and holes — where water is heated to 60°C–100°C, creating boiling pools that are not accessible for bathing.

The springs and pools are fed by waterfalls and underground thermal streams, providing a constant flow of naturally heated water. Visitors can enjoy three thermal pool areas, each with its own temperature and character, all surrounded by dense vegetation and the calming sound of cascading water.

1. Main Pool and Waterfall (≈ 25°C)

The main pool is the largest and most picturesque, set directly in front of a small waterfall. The water here is cooler, around 25°C, making it refreshing compared to the other pools. Staff often recommend starting here, and I agree — it’s a gentle way to begin your visit. The steps leading into the pool can be slippery, so wearing sturdy sandals like Tevas is helpful.

2. Two Pools at the Beginning (≈ 36°C)

At the start of the trail, you’ll find two smaller pools with temperatures around 36°C. They officially have limits of 9 and 6 people, though visitors rarely follow these numbers strictly. To reach them, you cross another wooden bridge, and the surrounding vegetation makes these pools feel especially intimate.

3. Pool After the Fumaroles (≈ 38°C)

This second pool is the warmest, reaching at least 38°C, and it was my favourite because of its wonderfully soothing temperature. Even in September, I felt cold when stepping out due to the higher elevation — the air is noticeably cooler here. This pool usually has fewer visitors and offers a more tranquil experience.

Best Time to Visit Caldeira Velha

Caldeira Velha is wonderful to visit throughout the year, and the experience changes with the seasons. We once had the last entry slot, and shortly before closing the park became beautifully tranquil — the pools were almost empty.

The most pleasant months in terms of temperature are May to October, when the weather is mild and the pools feel perfect. Caldeira Velha is also an excellent choice on a rainy day. Once you’re in the hot water, you don’t care about the rain, and the mist rising from the pools makes the rainforest atmosphere even more dramatic. Because the pools sit at an elevation of over 600 meters, it is always cooler here than at sea level, with noticeably higher humidity.

The Azores are quieter in winter, but Caldeira Velha becomes more popular with locals during this time. For the best experience, aim for early morning when the park opens at 9:00, around lunchtime after 13:00, or the last admission slot in the evening. These times usually offer fewer visitors and a more relaxed atmosphere.

São Miguel — together with Pico — is a favourite summer destination for residents from mainland Portugal, especially from Lisbon. July and August are the busiest months, so if possible, try to avoid these two months for a calmer visit.

Tips and What to Bring

• Bring a bottle of water, as there is no café inside the reserve.
• Wear older swimwear and bring a towel — the iron‑rich water can react with fabrics and jewellery, although Parque Terra Nostra is far more intense in staining. We prefer lightweight, absorbent, quick‑dry cotton towels that can be washed in hot water.
• Footwear is important. Either wear flip‑flops to move between pools or sturdy sandals like Teva. I preferred my Tevas because some areas were slippery.
• From fall to spring, you may appreciate a warm sweater after your visit — the elevation makes Caldeira Velha noticeably cooler than the coast.
• Leave your valuables in your accommodation or store them in a locker inside the park.
• After your visit, there is usually a food truck opposite the entrance for a quick snack or drink.

Best Combined Experience: Fogo Lake & Caldeira Velha

Fogo Lake is just a short drive from Caldeira Velha, making it easy to combine both highlights in one perfect half‑day. I highly recommend hiking at Fogo Lake in the morning before the clouds roll in, then having lunch in nearby Caldeiras (Google Maps location), and afterwards relaxing your muscles in the hot pools of Caldeira Velha. It’s a wonderful sequence — effort first, reward later.

Just don’t forget to book your time‑slot entrance ticket at least the day before, otherwise you may not get access.

My Personal Hotel Tips for São Miguel

São Miguel offers plenty of hotels and rental homes, but choosing the right location matters. The island is about 64 km long, so staying on the north coast or in Ponta Delgada keeps driving times manageable. After exploring the island, we always enjoyed a swim — either in a hotel pool or one of the safe piscinas naturais.

Pedras do Mar Resort & Spa is one of my favourite places to stay because of its dramatic Atlantic views, quiet location, and excellent indoor and outdoor pools. The sea‑view rooms are absolutely worth it, and the large parking area makes it convenient for rental cars.

If you prefer staying in Ponta Delgada, ILHA Hostel & Suites is a charming and surprisingly quiet option right in the centre. We spent two nights here before leaving the Azores, and the owner truly went the extra mile to make our stay comfortable.

For a more classic hotel experience, the Grand Hotel Açores Atlântico is perfectly located across from a huge piscina natural. It’s ideal if you want easy access to the marina, restaurants, and the waterfront while still enjoying a refreshing swim right in front of the hotel.

More São Miguel Highlights You Shouldn’t Miss

• Discover São Miguel’s lush interior in my guide to the Best Waterfalls on the island, including Salto do Cabrito and Salto do Prego.
• Explore the dramatic crater rim and drone‑like views in my detailed guide to Miradouro da Boca do Inferno — one of the most breathtaking viewpoints above the Sete Cidades crater lakes.
• Explore the dramatic crater lake and viewpoints in my detailed guide to Lagoa do Fogo.
• Browse all my Azores Islands Guides for more inspiration.
• And don’t miss our Ultimate Azores Video – 19 Must‑Visit Places on YouTube.

👉 Azores Map high resolution with my favourite places.

We are real travellers; we took all these pictures and footage ourselves. I provide honest content from our own experience — not generated by AI.