'Ō'iamoi Swell ForecastUnited StatesHIKauai'Ō'iamoi1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch III'Ō'iamoi swell forecast issued on 14 May.Get an account to remove ads