very local and knows the spot's moods well. The advantage is the quality of the wave and the easy parking.
The negative is the size; it is a very small bay and can get extremely crowded with surfers and kayakers, leaving little room for a winger to manoeuvre safely. Ideal Wind: SW, W (Side-on / Cross-on) Viable Wind: S, SSW, SW, WSW, W, WNW, NW
SW, W, S (Organized Anglesey waves)
15-25 knots is the sweet spot for most; 4-5m wings in lighter air, switching to 3m wings when it exceeds 28 knots.
Overall
A high-quality wave spot that produces very organised and clean wave peaks.
Vibe & Crowds
Local and expert. A hardy group of riders who know the spot's moods well. High. One of the busiest bays on Anglesey. Best in the off-season.
Suitable For
The organised waves are great for progression, but the bay is small.
Negatives & Hazards
Submerged rocks on both sides; very crowded in the water; powerful waves in a big swell.
Porth Trecastell
Open in Google MapsSmall car park right above the beach; short walk down to the sandy launch.
Best at High Tide (+/- 2 hrs). At low tide, the bay becomes very shallow and rocky.
If you have any insights or information to add to this spot guide, drop us a note at support@knotnow.co.uk
Wind and weather forecasts for Porth Trecastell are provided to help you plan your sessions. Conditions at this coastal location can change quickly, so always check the actual conditions when you arrive and trust your judgment. These forecasts are for recreational planning—always prioritize safety and verify conditions yourself before heading out. Tidal predictions for Porth Trecastell are based on the nearest primary station at PORTH TRECASTELL. Local conditions can vary from these predictions due to coastal topography and weather effects. Always verify tidal conditions on arrival—these predictions are for planning purposes only, not for navigational use or critical safety decisions.