Grass Holm Wind ForecastUnited KingdomOSOrkney IslandsGrass Holm1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met OfficeWind Real-Time Grass Holm wind forecast issued today at 1:08 am. Next forecast at approx. 1:08 pm. Wind Speed Wind GustGrass Holm Wind Statistics June WindKirkwall (12km)2026MayJuneStrongest 5 June, 202624.6mph WSWAverage June10.2mphStrongest 12 May, 202629.1mph WAverage May11.1mphStrongest 22 January, 202640.3mph ESEAverage 202614.1mphClimate (2021–2026)Kirkwall (12km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 22 January, 202453.7mph WAverage 2021–202612.4mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average June20%11.25%2.5%CalmStrongJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June17.5%10%2.5%CalmStrongGet WillyWeather+ to remove ads