Traeth Llydan Swell ForecastUnited KingdomWLIsle of AngleseyTraeth Llydan1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIITraeth Llydan swell forecast issued today at 12:44 pm. Next forecast at approx. 12:44 pm.Get WillyWeather+ to remove ads