Upper Trelyn Wind ForecastUnited KingdomWLCaerphillyUpper Trelyn1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Upper Trelyn wind forecast issued today at 12:16 pm. Next forecast at approx. 12:16 am.Upper Trelyn Wind Statistics November WindSt-athan (32km)2024OctoberNovemberStrongest 18 November, 202422.4mph WSWAverage November5.6mphStrongest 20 October, 202422.4mph SSEAverage October6.3mphStrongest 21 January, 202438mph WSWAverage 20247.7mphClimate (2011–Present)St-athan (32km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 11 March, 202142.5mph WSWAverage 2019–20247.9mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average November27.5%15%2.5%CalmNear GaleNovember Wind RoseNovember (5 Year Average)5 Year Average Annual5 Year Average November22.5%12.5%2.5%CalmNear GaleGet WillyWeather+ to remove ads