River Hamble - Mercury Yacht Harbour Wind ForecastUnited KingdomSEHampshireRiver Hamble - Mercury Yacht Harbour1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time River Hamble - Mercury Yacht Harbour wind forecast issued today at 7:12 pm. Next forecast at approx. 7:12 am.River Hamble - Mercury Yacht Harbour Wind Statistics August WindThorney Island (27km)2025JulyAugustStrongest 4 August, 202522.4mph WSWAverage August7.6mphStrongest 15 July, 202524.6mph WSWAverage July7.2mphStrongest 1 January, 202535.8mph SWAverage 20257.9mphClimate (2011–Present)Thorney Island (27km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 18 February, 202249.2mph WSWAverage 2020–20258.4mphWind 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