Hā'upu Bay Swell ForecastUnited StatesHIMauiHā'upu Bay1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIHā'upu Bay swell forecast issued today at 1:47 pm. Next forecast at approx. 1:47 pm.Get an account to remove ads