Porth y Wylfa Wind ForecastUnited KingdomWLIsle of AngleseyPorth y Wylfa1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met Office Swell Height and Direction Forecast NOAA WaveWatch IIIWind Real-Time Porth y Wylfa wind forecast issued today at 1:10 pm. Next forecast at approx. 1:10 am.Porth y Wylfa Wind Statistics September WindValley (18km)2025AugustSeptemberStrongest 1 September, 202526.8mph SAverage September10.8mphStrongest 4 August, 202538mph SSWAverage August11.4mphStrongest 24 January, 202551.4mph SAverage 202510.7mphClimate (2011–Present)Valley (18km)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 September15%8.75%2.5%CalmNear GaleSeptember Wind RoseSeptember (5 Year Average)5 Year Average Annual5 Year Average September22.5%12.5%2.5%CalmNear GaleGet WillyWeather+ to remove ads