Trefor Wind ForecastUnited KingdomWLGwyneddTrefor1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met Office Swell Height and Direction Forecast NOAA WaveWatch IIIWind Real-Time Trefor wind forecast issued today at 12:11 am. Next forecast at approx. 12:11 pm.Trefor Wind Statistics March WindValley (29km)2025FebruaryMarchStrongest 27 March, 202531.3mph SAverage March9.4mphStrongest 23 February, 202542.5mph SAverage February12.5mphStrongest 24 January, 202551.4mph SAverage 202511.6mphClimate (2011–Present)Valley (29km)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 March15%8.75%2.5%CalmStrong GaleMarch Wind RoseMarch (5 Year Average)5 Year Average Annual5 Year Average March17.5%10%2.5%CalmStrong GaleGet WillyWeather+ to remove ads