Dry vs Wet Sauna: What's the Difference?

It Comes Down to Humidity

The core difference between a dry and a wet sauna is how much moisture is in the air. Dry environments keep humidity low and let the air feel crisp, while wet environments add water vapor that makes the same temperature feel hotter and heavier. That single variable shapes how each one feels on your skin and how long you can comfortably stay.

Traditional Finnish Loyly (Wet)

A traditional Finnish sauna runs hot, roughly 150-195F, and stays fairly dry until you ladle water onto the heated stones. That burst of steam, called loyly, briefly spikes the humidity and creates a wave of intense heat. You control the moisture yourself, so a Finnish sauna can sit anywhere from dry to quite humid depending on how much water you use.

• Temperature: about 150-195F
• Humidity: adjustable, raised by water on stones
• Feel: enveloping, with sharp pulses of steam heat

Infrared (Very Dry)

An infrared sauna is the driest option. It heats your body directly with radiant panels rather than warming the air, so it operates at lower temperatures, around 120-150F, with very little humidity. The air stays comfortable to breathe, and many people find it easier to tolerate for longer sessions because of the gentler, drier heat.

• Temperature: about 120-150F
• Humidity: very low
• Feel: mild, dry, and easy on the airways

Steam Rooms (Fully Wet)

A steam room sits at the wettest extreme. It runs cooler, near 110-120F, but holds close to 100 percent humidity, so the air is thick with visible steam. The high moisture makes it feel surprisingly intense despite the lower temperature, and your skin stays wet rather than sweating dry.

• Temperature: about 110-120F
• Humidity: close to 100 percent
• Feel: heavy, damp, and immersive

How Each Feels

Dry heat tends to feel lighter and lets sweat evaporate, while wet heat feels heavier and clings to the skin. Some people love the bracing intensity of loyly or steam, while others prefer the calm, breathable warmth of infrared. None is objectively better, it is about personal comfort.

How to Choose

Pick infrared for the gentlest, driest experience, a Finnish sauna if you want adjustable steam and high heat, and a steam room if you love humid air. To dig deeper, see infrared vs traditional and infrared vs steam room.