Mersey River - Mouth Swell ForecastAustraliaTASNorth WesternMersey River - Mouth1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIMersey River - Mouth swell forecast issued yesterday at 7:35 pm. Next forecast at approx. 7:35 pm.Get WillyWeather+ to remove ads