Portsmouth Harbour - Inner Wind ForecastUnited KingdomSEHampshirePortsmouth Harbour - Inner1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portsmouth Harbour - Inner wind forecast issued yesterday at 7:11 pm. Next forecast at approx. 7:11 am.Portsmouth Harbour - Inner Wind Statistics June WindThorney Island (13km)2025MayJuneStrongest 1 June, 202524.6mph WAverage June11.9mphStrongest 27 May, 202526.8mph WSWAverage May8.2mphStrongest 1 January, 202535.8mph SWAverage 20257.8mphClimate (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 June15%8.75%2.5%CalmNear GaleJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June17.5%10%2.5%CalmNear GaleGet WillyWeather+ to remove ads