South Stack Wind ForecastUnited KingdomWLIsle of AngleseySouth Stack1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met Office Swell Height and Direction Forecast NOAA WaveWatch IIIWind Real-Time South Stack wind forecast issued yesterday at 7:10 pm. Next forecast at approx. 7:10 am.South Stack Wind Statistics April WindValley (12km)2026MarchAprilStrongest 2 April, 202631.3mph SAverage April12.3mphStrongest 12 March, 202647mph SSWAverage March14mphStrongest 12 March, 202647mph SSWAverage 202613mphClimate (2011–Present)Valley (12km)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 April15%8.75%2.5%CalmStrong GaleApril Wind RoseApril (5 Year Average)5 Year Average Annual5 Year Average April17.5%10%2.5%CalmStrong GaleGet WillyWeather+ to remove ads