Sugarloaf Island Swell ForecastUnited StatesCAHumboldt CountySugarloaf Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIISugarloaf Island swell forecast issued today at 9:46 pm. Next forecast at approx. 9:46 pm.Get WillyWeather+ to remove ads