Waipio Bay Swell ForecastUnited StatesHIMauiWaipio Bay1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIWaipio Bay swell forecast issued today at 1:49 pm. Next forecast at approx. 1:49 pm.Get WillyWeather+ to remove ads