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 1:09 am. Next forecast at approx. 1:09 pm. Wind Speed Wind GustPortsmouth Harbour - Burrow Island Wind Statistics August WindThorney Island (14km)2026JulyAugustStrongest 1 August, 20268.9mph NWAverage August4.5mphStrongest 12 July, 202624.6mph ENEAverage July7.5mphStrongest 24 March, 202635.8mph WAverage 20268.8mphClimate (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 August15%8.75%2.5%CalmNear GaleAugust Wind RoseAugust (5 Year Average)5 Year Average Annual5 Year Average August22.5%12.5%2.5%CalmNear GaleGet WillyWeather+ to remove ads