Knobby Head Swell ForecastAustraliaWASouth WestKnobby Head1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIKnobby Head swell forecast issued today at 9:55 pm. Next forecast at approx. 9:55 pm. Wave Height Sea TemperatureGet WillyWeather+ to remove ads