Graig Penllyn Wind ForecastUnited KingdomWLVale of GlamorganGraig Penllyn1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Graig Penllyn wind forecast issued today at 7:11 am. Next forecast at approx. 7:11 pm.Graig Penllyn Wind Statistics August WindSt-athan (9km)2025JulyAugustStrongest 4 August, 202524.6mph WSWAverage August7.8mphStrongest 14 July, 202522.4mph WAverage July6.9mphStrongest 16 April, 202535.8mph WAverage 20257.7mphClimate (2011–Present)St-athan (9km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202447mph WAverage 2020–20257.7mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average August27.5%15%2.5%CalmStrongAugust Wind RoseAugust (5 Year Average)5 Year Average Annual5 Year Average August30%16.25%2.5%CalmStrongGet WillyWeather+ to remove ads