Sully Island Wind ForecastUnited KingdomWLVale of GlamorganSully Island1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Sully Island wind forecast issued yesterday at 7:08 pm. Next forecast at approx. 7:08 am. Wind Speed Wind GustSully Island Wind Statistics June WindSt-athan (16km)2026MayJuneStrongest 6 June, 202626.8mph WAverage June10.9mphStrongest 13 May, 202629.1mph WNWAverage May7.4mphStrongest 24 March, 202631.3mph WSWAverage 20269.1mphClimate (2021–2026)St-athan (16km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202447mph WAverage 2021–20267.8mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average June27.5%15%2.5%CalmNear GaleJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June35%18.75%2.5%CalmNear GaleGet WillyWeather+ to remove ads