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 5:49 pm. Next forecast at approx. 5:49 pm.Get WillyWeather+ to remove ads