Johns Bay - Johns Island Swell ForecastUnited StatesMELincoln CountyJohns Bay - Johns Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIJohns Bay - Johns Island swell forecast issued today at 1:47 am. Next forecast at approx. 1:47 am. Wave Height Sea TemperatureGet WillyWeather+ to remove ads