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 yesterday at 6:13 pm. Next forecast at approx. 6:13 am. Wind Speed Wind GustGarth (Porthmadog) Wind Statistics November WindCapel Curig Saws (23 km)2026OctoberNovemberStrongest – Average November–Strongest 13 October, 202653.7 mph SWAverage October14.9 mphStrongest 13 October, 202653.7 mph SWAverage 202612.6 mphClimate (2021–2026)Capel Curig Saws (23 km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 21 January, 202458.2 mph SWAverage 2021–202612.3 mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average November27.5%15%2.5%CalmStormNovember Wind RoseNovember (5 Year Average)5 Year Average Annual5 Year Average November22.5%12.5%2.5%CalmStormGet WillyWeather+ to remove ads