Cape Johnson Swell ForecastUnited StatesWAClallam CountyCape Johnson1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIICape Johnson swell forecast issued yesterday at 9:44 pm. Next forecast at approx. 9:44 pm.Get WillyWeather+ to remove ads