Trevethin Wind ForecastUnited KingdomWLTorfaenTrevethin1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Trevethin wind forecast issued today at 1:09 am. Next forecast at approx. 1:09 pm.Trevethin Wind Statistics July WindSt-athan (43km)2025JuneJulyStrongest 2 July, 202517.9mph WAverage July6.7mphStrongest 1 June, 202520.1mph WSWAverage June9.1mphStrongest 16 April, 202535.8mph WAverage 20257.8mphClimate (2011–Present)St-athan (43km)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 July27.5%15%2.5%CalmStrongJuly Wind RoseJuly (5 Year Average)5 Year Average Annual5 Year Average July42.5%22.5%2.5%CalmStrongGet WillyWeather+ to remove ads