Semaphore Offshore Swell ForecastAustraliaSAAdelaideSemaphore Offshore1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIISemaphore Offshore swell forecast issued today at 6:22 pm. Next forecast at approx. 6:22 pm.Get an account to remove ads