Top 5 thermal baths in Tuscany to try this winter 2026

The thermal waters of Tuscany, notably those of Saturnia and San Filippo, are renowned for their exceptional mineral properties, particularly beneficial in winter to strengthen immunity and relieve cold-related ailments. At Saturnia, the water of the Cascate del Mulino gushes out at a constant temperature of 37.5°C and is heavily charged with sulfur, magnesium and thermal plankton. Sulfur is an excellent ally for the ENT sphere, helping to cleanse the bronchi and create a shield against winter viruses. Thermal plankton, for its part, has natural exfoliating properties and contributes to skin health, which is often attacked by the cold. The warmth of the water, combined with the contrast with the winter air, also stimulates blood circulation, toning the vein walls and awakening the body’s natural defenses.

The springs of Bagni San Filippo, with temperatures ranging from 35 to 50°C, are also rich in sulfur, calcium and bicarbonate. Calcium is particularly beneficial for the skin, helping to hydrate it and repair it from the assaults of the cold wind. The locals actually use the clay mud of San Filippo as a natural face mask, taking advantage of its purifying and soothing properties. The sulfur smell, more intense near the source, is a sign of the mineral richness of these waters, recognized for their beneficial effects on the joints. Immersing yourself in these warm waters in the middle of winter provides a true « biological reset », soothing the mind thanks to the constant sound of the water and promoting general well-being. These natural thermal experiences are an excellent alternative for taking care of your health far from pharmaceutical products, in the heart of the wild nature. For more details on the properties of the waters of San Filippo, you can consult this article: Bagni di San Filippo: natural hot springs of Tuscany.

Traveling with children to the wild hot springs in winter requires some preparation, as conditions can be rustic. Sites like the Cascate del Mulino in Saturnia or Bagni San Filippo are free and offer a raw experience in the middle of nature. However, the air temperature is cold, the paths can be slippery and the showers are often non-existent or rudimentary. The strong sulfur smell and the consistency of the water can also surprise the youngest ones. If your children are adventurous and well equipped (non-slip shoes, warm bathrobes, hats, hot tea), the experience can be memorable, but you must be aware of the constraints.

For a more comfortable experience and facilities suitable for families, paid hot springs are an excellent option. The Saturnia Thermal Park, for example, offers thermal pools with complete infrastructure. Entry costs around €30 per adult and is free for children under 12. Opening hours are generally from 9:30 a.m. to 7 p.m. in summer and until 5 p.m. in winter. The Terme di Saturnia Natural Spa & Golf Resort also offers access to its pools for around €65 per person, with high-end services. In Bagni San Filippo, the Hôtel Terme San Filippo offers a spa with professional facilities open from March to October, from 8:30 a.m. to 7 p.m. (closed on Tuesdays), with bath access rates around €15 to €25. Finally, if you are looking for the grandeur and comfort of a historic establishment, Montecatini Terme and its Tettuccio offer a thermal experience more focused on well-being and contemplation in a magnificent architectural setting, although people come more for the digestive properties of the waters than for bathing proper. These paid options guarantee a regulated temperature, changing rooms and hot showers, making the experience more pleasant and safer for the whole family in winter.

Yes, the sulfur smell is an inseparable characteristic of Tuscany’s natural hot springs, and it is particularly noticeable at Saturnia and San Filippo. At Saturnia, the smell is strong and can cling tenaciously to skin and clothing. It is a sign of the water’s mineral richness, essential for its therapeutic benefits. At San Filippo, the smell is also present, especially near the source where the water gushes out at its maximum temperature, but it generally becomes more bearable as you move away. If you are sensitive to smells, it can be a bit surprising at first, but most visitors get used to it quickly, given the exceptional setting and the benefits of the baths.

As for precautions, they are absolutely necessary, especially for your jewelry and your swimsuit. Sulfur causes rapid and irreversible oxidation of silver. It is therefore imperative to remove all your silver jewelry (rings, necklaces, earrings) before entering the water, even for a short swim. For your swimsuit, the characteristic rotten egg smell of sulfur tends to permeate the fibers durably. My advice is to sacrifice an old swimsuit that you won’t mind seeing permeated with this smell. Once your session is over, rinse it thoroughly in clean water as soon as possible to limit the olfactory damage. Plan a waterproof bag to carry it separately from your other belongings. These small precautions will allow you to fully enjoy the experience without unpleasant surprises on your return!

Absolutely! If you are looking for a thermal experience combining history, relaxation and tranquility, far from the crowds of the most famous sites, I highly recommend San Casciano dei Bagni. This little gem located in the province of Siena offers an immersion in Roman history with its ancient stone pools, accessible free of charge. The water there is crystal clear, and the sulfur smell is much less marked than at Saturnia, which contributes to a more soothing atmosphere. You will bathe in ancient Roman pools, a true haven of peace nestled under the olive trees, offering an idyllic setting for an introspective and silent session.

What makes San Casciano dei Bagni particularly attractive in winter is its low attendance. It is the least touristy site in this selection, ideal if you hate crowds. After your bath in these waters at around 40°C, you can walk back up the hill to the medieval village that proudly overlooks the site. Enjoy a hot coffee while admiring the spectacular view of the Val d'Orcia, particularly striking with the low winter light. The recent archaeological discoveries of incredible bronze statues extracted from the mud attest to the historical and sacred importance of this place for millennia. It is an experience that combines the benefits of thermal waters with a deep connection with the past, all in a precious tranquility in the middle of the winter season.

To fully enjoy the wild hot springs of Tuscany in winter and avoid the crowds, rigorous planning is key. The best advice is to aim for dawn. Arriving around 6 a.m. will guarantee you have the pools almost to yourself. The water vapor mingling with the first rays of the sun offers an unforgettable spectacle and an atmosphere of the utmost serenity. In winter, the contrast between the cool air and the warm water is particularly invigorating, and the morning tranquility accentuates this feeling of well-being.

As for days of the week, it is strongly recommended to avoid weekends. Italians love their hot springs on Sundays, and sites like Saturnia can get very busy. Prefer weekdays instead, ideally Tuesday or Wednesday, for minimal attendance. Also don’t hesitate to keep an eye on the weather: a light drizzle can discourage many visitors, offering you calmer pools. To maximize your chances of getting ahead of the groups and returning quickly to the warmth after your bath, the golden rule is to stay in a nearby agriturismo. Being less than ten minutes away by car from the hot springs gives you a huge strategic advantage. It allows you to change and shower in the warmth right after your immersion, thus avoiding catching a cold. Also make sure your accommodation has parking, as this will greatly simplify your logistics, especially in medieval villages where spaces are scarce.