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 7:08 pm. Next forecast at approx. 7:08 am.Rhiwlas (Llandderfel) Wind Statistics June WindLake Vyrnwy Saws (20km)2026MayJuneStrongest 3 June, 202642.5mph SWAverage June12.4mphStrongest 20 May, 202624.6mph SWAverage May6.9mphStrongest 4 April, 202649.2mph SWAverage 20269.2mphClimate (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 June20%11.25%2.5%CalmGaleJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June17.5%10%2.5%CalmGaleGet WillyWeather+ to remove ads