Three Hummocks Swell ForecastAustraliaNTArnhem LandThree Hummocks1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIThree Hummocks swell forecast issued today at 5:58 pm. Next forecast at approx. 5:58 pm.Get WillyWeather+ to remove ads