
National Sauna Week: wellness with great prizes
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From Monday 14 to Friday 18 September 2026, the Belgian Sauna Association is organising National Sauna Week. And of course, Thermae Boetfort and Thermae Grimbergen are taking part too!
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A good Aufguss session is so much more than heat and scent. It is a carefully crafted sauna ritual that takes you on a unique journey.
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The sauna master pours water infused with essential oils on the hot stones or uses an alternative like ice balls. This produces a sudden release of heat and scent, creating an intense experience. He then flaps a towel or fan, spreading the hot air around the cabin in a targeted way which makes your body warm up faster and stimulates your sweat response.
There is a whole process behind every Aufguss session. It all starts with the selection of scents. What blend of essential oils goes best with the chosen theme? What effect does the sauna master want to create? Scents directly influence your limbic system, the part of your brain that regulates your emotions. So, you notice their effect straightaway.
The Aufguss session itself is built up in stages. It starts off gently and then becomes very intense. This allows your body to get used to the heat gradually. Our experienced sauna masters make sure to give you a unique experience every time you take part in an Aufguss session.
The sauna master chooses the tool he is going to use, a fan or towel. The movements, too, are carefully choreographed. Every movement has a specific goal.
Finally, the sauna master selects music and/or other elements that give the session extra flavour.
No two Aufguss sessions are the same. Every time you take part in one, you enjoy a different, unique experience that invites you to really unwind.
The maximum number of Aufguss sessions you can safely take part in depends on your body and your sauna experience. Our top tip? You don’t have to fit in all the experiences on our programme during your sauna day. That really would be too much, even if you were a super experienced sauna goer. Choose one to three sessions that you would like to try and follow your gut.
And always, always listen to your body. Don’t feel bad if you need to leave the sauna before the session has ended. But do so quietly and calmly, of course. And no, you don’t have to rejoin the session afterwards.
Visit Thermae Boetfort and experience this unique sauna ritual. Discover how an Aufguss session gives both your body and mind a boost and helps you relax!
Click here to view our full wellness programme.

- Promo - Promo
From Monday 14 to Friday 18 September 2026, the Belgian Sauna Association is organising National Sauna Week. And of course, Thermae Boetfort and Thermae Grimbergen are taking part too!

- Promo - Promo
Visit Thermae Boetfort or Thermae Grimbergen in August and receive an exclusive voucher! This voucher lets you bring someone along to our sauna and wellness centre for free between 1 September and 16 October 2026.

- Sauna experience - Sauna experience
Pure relaxation is always at the heart of what we do, and that’s no different on public holidays. Thermae Boetfort is open on 15 August, the perfect day to slow down completely. Will you choose peace, warmth and pure indulgence on this holiday?
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