Traeth Glaslyn Nature Reserve

Traeth Glaslyn Nature Reserve_Lin Cummins

A good place to see estuarine birds throughout the year, with a range of habitats from open water to wet woodland


1 mile east of Porthmadog, at the eastern end of the Cob (sea wall)
LL48 6HT

OS Map Reference

A static map of Traeth Glaslyn

Know before you go

36 hectares

Entry fee


Parking information

Small carpark near birdhide

Grazing animals

Yes, cattle

Walking trails

Often wet and prone to flooding at high tide, take care at all times. 


Limited, apart from the short path to birdhide (including a few steps to negotiate)


No dogs permitted

When to visit

Opening times

Open at all times

Best time to visit

All year

About the reserve

A large estuarine site to the east of Porthmadog, part of the Glaslyn Marshes SSSI. It is especially interesting because it provides a good example of seral succession - the habitat changes from brackish open water, through mudflats, marshes and wet grassland to damp alder carr. Excellent views of estuarine birds can be had throughout the year, particularly good for winter wildfowl.

Contact us

North Wales Wildlife Trust
Contact number: 01248 351541

Environmental designation

Site of Special Scientific Interest (SSSI)