Menai Strait - Trefarthen Wind ForecastUnited KingdomWLIsle of AngleseyMenai Strait - Trefarthen1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Menai Strait - Trefarthen wind forecast issued today at 1:08 am. Next forecast at approx. 1:08 pm. Wind Speed Wind GustMenai Strait - Trefarthen Wind Statistics June WindValley (20km)2026MayJuneStrongest 3 June, 202633.6mph SSWAverage June13.3mphStrongest 19 May, 202631.3mph SSEAverage May11.1mphStrongest 4 April, 202649.2mph SSWAverage 202612.7mphClimate (2021–2026)Valley (20km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202153.7mph SSWAverage 2021–202612.2mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average June15%8.75%2.5%CalmGaleJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June20%11.25%2.5%CalmGaleGet WillyWeather+ to remove ads