Saint Margaret's Island Swell ForecastUnited KingdomWLPembrokeshireSaint Margaret's Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIISaint Margaret's Island swell forecast issued yesterday at 11:49 pm. Next forecast at approx. 11:49 pm.Get an account to remove ads