Portsmouth Harbour - Burrow Island Wind ForecastUnited KingdomSEHampshirePortsmouth Harbour - Burrow Island1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portsmouth Harbour - Burrow Island wind forecast issued today at 7:09 pm. Next forecast at approx. 7:09 am. Wind Speed Wind GustPortsmouth Harbour - Burrow Island Wind Statistics September WindThorney Island (14km)2026AugustSeptemberStrongest 4 September, 202624.6mph WSWAverage September8.6mphStrongest 29 August, 202629.1mph SSWAverage August7.6mphStrongest 24 March, 202635.8mph WAverage 20268.6mphClimate (2021–2026)Thorney Island (14km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202249.2mph WSWAverage 2021–20268.5mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average September15%8.75%2.5%CalmNear GaleSeptember Wind RoseSeptember (5 Year Average)5 Year Average Annual5 Year Average September17.5%10%2.5%CalmNear GaleGet WillyWeather+ to remove ads