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Blue Lagoon

Wild Swimming Spot

Terrain:

Activities

Best Time To Visit

Coastal, Cliffs

Swimming, Walking, Photography

Summer

Photo: Colin Smith via Geograph.org.uk

The Blue Lagoon at Abereiddy is a flooded former slate quarry on the Pembrokeshire coast, its water a striking blue-green held in a pit of dark rock right beside the sea. Slate was cut here into the early twentieth century, and after the quarry closed the wall separating it from the sea was blasted ...

10

Parking nearby

0

Food Spots nearby

2

Staycations nearby

Parking:

Food:

Staycations:

5 day, 5 overnight

Haverfordwest Cabin, Glenside Cottage

Nearest Hidden Gem 1

Nearest Hidden Gem 2

Nearest Hidden Gem 3

FAQ's/Things to Know

Where is Blue Lagoon?
Wales holds this coastal destination on the rugged Pembrokeshire coastline. Hikers often follow the nearby coastal path to spot the deep pool from the cliffs above.

What type of place is Blue Lagoon?
Blue Lagoon is a wild swimming spot inside a flooded slate quarry on the coast of Pembrokeshire in West Wales.

When is the best time to visit Blue Lagoon?
Summer months provide the best conditions for jumping into the water. Early September also works beautifully because the crowds thin out while the water retains some seasonal warmth.

What can you do at Blue Lagoon?
Swimmers regularly plunge into the deep blue-green pool from old industrial slate platforms. Walking along the rocky edge also reveals historic worker huts and a pebble beach.

How long should I spend at Blue Lagoon?
Spending a couple of hours gives you plenty of time for a proper swim and a quick look around the old ruins. A longer stay makes sense if you pack a warm flask of tea and combine the swim with a coastal walk.

Where do I park at Blue Lagoon?
Vehicles can use ten spaces nearby, which provide five day and five overnight spots. Full details are available on the UK Hidden Gems app.

Where can I eat near Blue Lagoon?
There are no food spots recorded immediately near Blue Lagoon, check the UK Hidden Gems app for the nearest options.

Where can I stay near Blue Lagoon?
Haverfordwest Cabin and Glenside Cottage provide two options to book nearby. Full details are available on the UK Hidden Gems app.

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Last Updated:

02 July 2026

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