Heolgerrig Wind ForecastUnited KingdomWLMerthyr TydfilHeolgerrig1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Heolgerrig wind forecast issued today at 1:11 am. Next forecast at approx. 1:11 pm. Wind Speed Wind GustHeolgerrig Wind Statistics June WindSt-athan (37km)2026MayJuneStrongest 6 June, 202626.8mph WAverage June9mphStrongest 13 May, 202629.1mph WNWAverage May7.4mphStrongest 24 March, 202631.3mph WSWAverage 20268.9mphClimate (2021–2026)St-athan (37km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202447mph WAverage 2021–20267.8mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average June27.5%15%2.5%CalmNear GaleJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June35%18.75%2.5%CalmNear GaleGet WillyWeather+ to remove ads