Rhiwlas (Llandderfel) Wind ForecastUnited KingdomWLGwyneddRhiwlas (Llandderfel)1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Rhiwlas (Llandderfel) wind forecast issued today at 6:11 pm. Next forecast at approx. 6:11 am.Rhiwlas (Llandderfel) Wind Statistics January WindLake Vyrnwy Saws (20km)2026DecemberJanuaryStrongest 12 January, 202633.6mph SWAverage January7.9mphStrongest 9 December, 202542.5mph SSWAverage December11.5mphStrongest 12 January, 202633.6mph SWAverage 20267.9mphClimate (2011–Present)Lake Vyrnwy Saws (20km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 23 January, 202451.4mph SWAverage 2021–20268mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average January20%11.25%2.5%CalmStrong GaleJanuary Wind RoseJanuary (5 Year Average)5 Year Average Annual5 Year Average January25%13.75%2.5%CalmStrong GaleGet WillyWeather+ to remove ads