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 6:10 am. Next forecast at approx. 6:10 pm.Menai Strait - Trefarthen Wind Statistics November WindValley (20km)2025OctoberNovemberStrongest 1 November, 202535.8mph SSWAverage November16.2mphStrongest 3 October, 202549.2mph SAverage October13.2mphStrongest 24 January, 202551.4mph SAverage 202511.4mphClimate (2011–Present)Valley (20km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202153.7mph SSWAverage 2020–202512mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average November15%8.75%2.5%CalmStrong GaleNovember Wind RoseNovember (5 Year Average)5 Year Average Annual5 Year Average November17.5%10%2.5%CalmStrong GaleGet WillyWeather+ to remove ads