
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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Heat and scent come together in one intense wellness moment. But what exactly is an Aufguss session? Find out how our sauna masters prepare this sauna ritual and how these sessions affect you!
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An Aufguss session is so much more than pouring water on hot stones. It is a carefully crafted sauna ritual, where heat, scent, music and movement meet. A moment where you don’t have to do anything for a while.
At Thermae Grimbergen, you have several opportunities every day to take part in this wonderful experience. You can visit us seven days a week for sauna and wellness, both in swimwear and naked.
A hot, scent-filled experience in the sauna. During an Aufguss session, the sauna master pours water infused with essential oils on hot sauna stones. This causes a sudden rise in temperature in the cabin. Using a towel or fan, the Aufguss master then spreads this hot air around the sauna.
Result? A more intense heat experience, your breathing slows and your senses awaken. An Aufguss session is both relaxing and invigorating at the same time.
Our Aufguss masters prepare their sessions carefully. They pay a lot of attention to:
Our Aufguss masters coordinate everything beautifully to give you a deeply relaxing experience.
Whether or not you take part in our Aufguss sessions is completely up to you. There is no obligation. One thing we notice is that some customers try to work their way through our entire wellness programme. Not something we recommend. Aufguss sessions can be intense. Our advice? Pick one to three sessions and keep it at that.
Also, during a session, listen carefully to your body. Are you getting too hot? Go sit on a lower bench or leave the sauna. The goal should always be relaxation, the experience should always be enjoyable. It is not about pushing your limits.
Curious about our wellness programme?

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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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On 13/08, you get 15% off the following 25-minute treatments: facial treatment; manicure; body peeling; back, shoulder and neck massage; Body Relax Massage; head and back massage; face and head massage or foot and calf massage. Applies only to bookings for 13/08!

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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.
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