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Saunas in Ireland

Mercury Sauna Portmarnock

Portmarnock, Co. Dublin

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By the sea in Co. Dublin

Mercury Sauna Portmarnock

Portmarnock, Co. Dublin

Mercury Sauna is an outdoor sauna in the north car park at Portmarnock beach, a short walk from the sea. Its social sessions run seven days a week, and you can cool off in the sea between rounds.

Rated 4.8 from 36 Google reviews (October 2026)

  • Group bookings
Book a sessionOpen in Google Maps

At a glance

Where
Portmarnock, Co. Dublin
Setting
By the sea
The sauna
Not listed
Cooling off
Sea swim nearby
Facilities
Not listed
Groups
Group bookings available
Access
Not listed
Last checked
October 2026

Listing edited by Ciaran AherneHow we check listingsReport a problem with this listing

About Mercury Sauna Portmarnock

When we checked, a 55-minute social session cost €20. Private hire started at €135 for up to five people, with €20 for each extra guest up to twelve, and is booked on request.

Velvet Strand is on the doorstep, so it's a natural add-on to a walk or a swim at Portmarnock.

What people say

Our summary of 36 Google reviews, averaging 4.8, read in October 2026.

Even, proper heat
Reviewers, including experienced sauna-goers, praise how well the sauna is heated, and several mention the stove being fed from outside so the heat doesn't escape.
Herb-scented steam
A number of reviews mention the herbs the owner adds, and the meadow scent in the sauna.
Close to the sea
The short walk to the beach for a dip is a big part of the appeal.
Spacious and clean
Regulars describe it as roomy, comfortable and easy to book.

Good to know

  • Book social sessions online. Private sessions are booked on request.
  • It's in the north car park at Portmarnock beach.
  • Bring water, two towels and swimwear.
  • Contact: mercurysauna@gmail.com or 089 414 7488.

Mercury Sauna Portmarnock: quick answers

How much does Mercury Sauna Portmarnock cost?

When we checked in October 2026, sessions cost social (shared) sauna (55 minutes) for €20, private sauna, up to 5 people (€20 per extra guest, up to 12) (55 minutes) for €135. Prices can change, so confirm on their booking page.

Where is Mercury Sauna Portmarnock?

Portmarnock Beach North Car Park, Burrow, Portmarnock, Co. Dublin, in County Dublin.

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