Grassholm Wind ForecastUnited KingdomWLPembrokeshireGrassholm1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Grassholm wind forecast issued today at 12:09 am. Next forecast at approx. 12:09 pm.Grassholm Wind Statistics December WindMilford Haven C.b. (29km)2025NovemberDecemberStrongest 9 December, 202533.6mph SAverage December15.9mphStrongest 3 November, 202529.1mph SSWAverage November11.1mphStrongest 24 January, 202544.7mph SAverage 20259.3mphClimate (2011–Present)Milford Haven C.b. (29km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 December, 202444.7mph WAverage 2020–20259.3mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average December17.5%10%2.5%CalmStrong GaleDecember Wind RoseDecember (5 Year Average)5 Year Average Annual5 Year Average December15%8.75%2.5%CalmStrong GaleGet WillyWeather+ to remove ads