Portsmouth Harbour Entrance Wind ForecastUnited KingdomSEHampshirePortsmouth Harbour Entrance1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portsmouth Harbour Entrance wind forecast issued today at 1:13 am. Next forecast at approx. 1:13 pm.Portsmouth Harbour Entrance Wind Statistics March WindThorney Island (13km)2025FebruaryMarchStrongest 15 March, 202520.1mph ENEAverage March6.6mphStrongest 21 February, 202524.6mph SSEAverage February8.1mphStrongest 1 January, 202535.8mph SWAverage 20257.6mphClimate (2011–Present)Thorney Island (13km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202249.2mph WSWAverage 2020–20258.5mphWind 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 March27.5%15%2.5%CalmStrong GaleGet WillyWeather+ to remove ads