Glan-y-llyn Wind ForecastUnited KingdomWLRhondda Cynon TaffGlan-y-llyn1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Glan-y-llyn wind forecast issued today at 1:09 pm. Next forecast at approx. 1:09 am. Wind Speed Wind GustGlan-y-llyn Wind Statistics October WindSt-athan (20 km)2026SeptemberOctoberStrongest 9 October, 202629.1 mph WAverage October9.2 mphStrongest 19 September, 202624.6 mph WSWAverage September8.4 mphStrongest 24 March, 202631.3 mph WSWAverage 20268.7 mphClimate (2021–2026)St-athan (20 km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202447 mph WAverage 2021–20267.9 mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average October27.5%15%2.5%CalmNear GaleOctober Wind RoseOctober (5 Year Average)5 Year Average Annual5 Year Average October35%18.75%2.5%CalmNear GaleGet WillyWeather+ to remove ads