Caldwell Island Swell ForecastUnited StatesMEKnox CountyCaldwell Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIICaldwell Island swell forecast issued yesterday at 7:45 pm. Next forecast at approx. 7:45 pm.Get WillyWeather+ to remove ads