Flat Top Island Swell ForecastAustraliaQLDMackayFlat Top Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIFlat Top Island swell forecast issued yesterday at 6:24 pm. Next forecast at approx. 6:24 pm.Get WillyWeather+ to remove ads