Menai Strait - Castell-gwylan Wind ForecastUnited KingdomWLIsle of AngleseyMenai Strait - Castell-gwylan1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Menai Strait - Castell-gwylan wind forecast issued today at 6:09 am. Next forecast at approx. 6:09 pm.Menai Strait - Castell-gwylan Wind Statistics January WindValley (21km)2026DecemberJanuaryStrongest 11 January, 202640.3mph SAverage January13mphStrongest 9 December, 202553.7mph SAverage December16.4mphStrongest 11 January, 202640.3mph SAverage 202613mphClimate (2011–Present)Valley (21km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202153.7mph SSWAverage 2021–202612mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average January15%8.75%2.5%CalmStrong GaleJanuary Wind RoseJanuary (5 Year Average)5 Year Average Annual5 Year Average January20%11.25%2.5%CalmStrong GaleGet WillyWeather+ to remove ads