Garth (Porthmadog) Wind ForecastUnited KingdomWLGwyneddGarth (Porthmadog)1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Garth (Porthmadog) wind forecast issued today at 7:11 am. Next forecast at approx. 7:11 pm.Garth (Porthmadog) Wind Statistics March WindCapel Curig Saws (23km)2025FebruaryMarchStrongest 27 March, 202535.8mph SWAverage March9.1mphStrongest 23 February, 202553.7mph SWAverage February14.5mphStrongest 24 January, 202553.7mph SWAverage 202511.9mphClimate (2011–Present)Capel Curig Saws (23km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 21 January, 202458.2mph SWAverage 2020–202512.1mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average March27.5%15%2.5%CalmStormMarch Wind RoseMarch (5 Year Average)5 Year Average Annual5 Year Average March30%16.25%2.5%CalmStormGet WillyWeather+ to remove ads