Mermaid Reef Swell ForecastAustraliaWAKimberleyMermaid Reef1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIMermaid Reef swell forecast issued yesterday at 10:25 pm. Next forecast at approx. 10:25 pm.Get an account to remove ads