Porth Dinllaen


Porth Dinllaen
© Geograph

Water Quality

Annual classification

2017 Not tested

Today's forecast

Forecasts are not available for this location.

A long sweeping sheltered sandy bay nestling behind the Nefyn headland, situated next to Porth Dinllaen on the LLeyn peninsula.


Boating and bathing are popular here. The coastal walking is excellent here and the coastal path runs past the beach. There are shops and places to eat in nearby Nefyn.

Wildlife and Walks

Explore the LlÅ·n Peninsula - Visit Snowdonia have more information on walking, cycle routes and more information generally on the Peninsula here: https://www.visitsnowdonia.info/lln_peninsula-21.aspx

What's tested here?

Water samples are not taken at this beach because it has not been designated as a bathing water and there is no voluntary sampling.
Why isn't this a designated bathing water?

High levels of bacteria in the water can indicate pollution from sewage treatment works or polluted rain water draining from the land.
Where does pollution comes from and how can you help?

Water quality can be reduced for up to 72 hours after heavy rain. Look out for temporary signs at the beach and on our website.

Annual classification

2017 Not tested

What does this mean?

At the end of every bathing season the water quality is classified as either:

Excellent — the highest classification meaning the water is cleanest

Good — generally good water quality

Sufficient — meets minimum standards

Poor — You are advised not to swim. The beach will stay open and an action plan should be in place to improve the water quality.

Today's forecast

Forecasts are not available for this location.


There is currently no weather forecast for this beach.

Click here to visit the Met Office website to search for a nearby location

Tide times

Potential hazards at this beach

This beach is not yet classified, please see our safety tips below or contact the local beach operator for further information.

Lifeguarded locations - top five safety tips

Non-lifeguarded locations For those who can’t make it to a lifeguarded beach

For more information visit rnli.org.uk.

Facilities at Porth Dinllaen

Food Food Toilets Toilets Shops Shops



Parking available in town or at the National trust car parks (there is a charge).

Dog restrictions


Dogs are allowed.

Beach cleaning

No current information