Coll - Hogh Bay Swell ForecastUnited KingdomSTArgyll and ButeColl - Hogh Bay1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIColl - Hogh Bay swell forecast issued yesterday at 6:50 pm. Next forecast at approx. 6:50 pm.Get WillyWeather+ to remove ads