Na'ia Lagoon Swell ForecastUnited StatesHIHonoluluNa'ia Lagoon1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIINa'ia Lagoon swell forecast issued yesterday at 7:44 pm. Next forecast at approx. 7:44 pm.Get WillyWeather+ to remove ads