Cape Knob Swell ForecastAustraliaWAGreat SouthernCape Knob1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIICape Knob swell forecast issued today at 9:52 am. Next forecast at approx. 9:52 am. Wave Height Sea TemperatureGet WillyWeather+ to remove ads