Twin Lakes State Beach (Harbor Beach) Swell ForecastUnited StatesCASanta Cruz CountyTwin Lakes State Beach (Harbor Beach)1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIITwin Lakes State Beach (Harbor Beach) swell forecast issued today at 10:46 am. Next forecast at approx. 10:46 am.Get WillyWeather+ to remove ads