Portchester Wind ForecastUnited KingdomSEHampshirePortchester1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portchester wind forecast issued today at 1:08 pm. Next forecast at approx. 1:08 am.Portchester Wind Statistics May WindThorney Island (14km)2026AprilMayStrongest 13 May, 202622.4mph WAverage May6mphStrongest 5 April, 202633.6mph WAverage April9.5mphStrongest 24 March, 202635.8mph WAverage 20269mphClimate (2011–Present)Thorney Island (14km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202249.2mph WSWAverage 2021–20268.4mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average May15%8.75%2.5%CalmGaleMay Wind RoseMay (5 Year Average)5 Year Average Annual5 Year Average May15%8.75%2.5%CalmGaleGet WillyWeather+ to remove ads