Trethomas Wind ForecastUnited KingdomWLCaerphillyTrethomas1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Trethomas wind forecast issued today at 7:10 pm. Next forecast at approx. 7:10 am.Trethomas Wind Statistics June WindSt-athan (27km)2026MayJuneStrongest – Average June–Strongest 13 May, 202629.1mph WNWAverage May7.4mphStrongest 24 March, 202631.3mph WSWAverage 20268.8mphClimate (2011–Present)St-athan (27km)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