Portsmouth Harbour - M275 Motorway Bridge Wind ForecastUnited KingdomSEHampshirePortsmouth Harbour - M275 Motorway Bridge1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Portsmouth Harbour - M275 Motorway Bridge wind forecast issued today at 12:10 pm. Next forecast at approx. 12:10 am.Portsmouth Harbour - M275 Motorway Bridge Wind Statistics February WindThorney Island (11km)2026JanuaryFebruaryStrongest 15 February, 202624.6mph SAverage February9.5mphStrongest 11 January, 202631.3mph SSWAverage January9.7mphStrongest 11 January, 202631.3mph SSWAverage 20269.7mphClimate (2011–Present)Thorney Island (11km)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 February15%8.75%2.5%CalmGaleFebruary Wind RoseFebruary (5 Year Average)5 Year Average Annual5 Year Average February12.5%7.5%2.5%CalmGaleGet WillyWeather+ to remove ads