Trallwn Wind ForecastUnited KingdomWLSwanseaTrallwn1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Trallwn wind forecast issued today at 6:10 pm. Next forecast at approx. 6:10 am.Trallwn Wind Statistics December WindPembrey Sands Samos (33km)2025NovemberDecemberStrongest – Average December–Strongest 1 November, 202547mph SWAverage November14.9mphStrongest 27 January, 202555.9mph SWAverage 202511.4mphClimate (2011–Present)Pembrey Sands Samos (33km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202264.9mph WNWAverage 2020–202511.7mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average December17.5%10%2.5%CalmStormDecember Wind RoseDecember (5 Year Average)5 Year Average Annual5 Year Average December17.5%10%2.5%CalmStormGet WillyWeather+ to remove ads