A First-Timer's Guide to Outdoor Saunas

Outdoor saunas are having a moment, and if you've never been to one, the whole thing can look a little mysterious from the outside. Strangers in swimwear, a wooden cabin by the sea, someone climbing out to get into a cold tub on purpose.

It's simpler than it looks. Here's what actually happens, what to pack, and how to fit in on your first visit.

How it works

The rhythm is always the same: heat, cold, rest, repeat. You sit in the hot sauna for ten to fifteen minutes, cool off in cold water, then rest for a few minutes before going again. Most sessions run 50 to 90 minutes, which is enough time for two or three full rounds.

The heat comes from a wood-fired or electric stove topped with stones. Ladling water onto those stones (löyly, if you want the Finnish word) sends up a wave of steam that makes the room feel hotter. The cold part is whatever the setting offers: a plunge tub, an ice bath, a river, or the sea itself.

You'll usually pick from a few session types. A community or social session means sharing the space with others, and it's the easiest way to start. A private session gives you and your group the place to yourselves. Some venues also run guided sessions, often called Aufguss, where a host works the heat and steam with scented water and a towel, building the room in rounds.

What to bring

Keep it simple:

• Swimwear (most UK outdoor saunas are swimwear-on)
• A towel to sit on, and another to dry off
• A warm robe or layers for after, because you cool down fast outdoors
• Water to drink
• Flip-flops or sliders for the walk between sauna and cold water

If the cold plunge is a lake or the sea, check the venue's kit list before you go. Wild-swim setups often ask for a bright swim hat and a tow float, and some turn people away without them.

A bit of etiquette

None of it is complicated, and a good host will guide you. The main things:

Shower first if there's one available. Sit on your towel rather than the bare bench. Close the door quickly so you don't let the heat out. Keep your voice down and your phone away; part of the point is the quiet. And if you want to add löyly in a shared session, ask the room first; not everyone wants it hotter.

Getting the cold bit right

The cold water is the part people dread and then come back for. Ease in rather than diving, breathe slowly, and keep your first dip short. Thirty seconds is plenty to begin with. You'll build up quickly over a few visits. If it stops being fun, get out. There are no medals.

A few good habits

Drink water before and after, and don't sauna after a big drink. Listen to your body; if you feel dizzy or light-headed, step out and cool down. Cold-water immersion isn't suitable for everyone, so if you have a heart or circulation condition, check with the venue or your GP first. Age limits vary too; some sessions are over-16s or over-18s only.

One practical note: almost every outdoor sauna runs on pre-booking, and the good ones fill up. Book your slot before you travel rather than turning up on spec.

Your first session

If in doubt, book a community session, arrive a few minutes early, and follow what everyone else is doing. Outdoor sauna culture is friendly by design, and people are there to switch off, not to judge the newcomer. One round in, you'll have the hang of it.

Ready to find one? Browse outdoor saunas near you on The Sauna List.