Black Rock Sands Porthmadog Wind ForecastUnited KingdomWLGwyneddBlack Rock Sands Porthmadog1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Met Office Swell Height and Direction Forecast NOAA WaveWatch IIIWind Real-Time Black Rock Sands Porthmadog wind forecast issued today at 10:21 pm. Next forecast at approx. 10:21 am.Black Rock Sands Porthmadog Wind Statistics September WindCapel Curig Saws (16.2 miles)2021AugustSeptemberStrongest 24 September, 202129.1mph SWAverage September7.3mphStrongest 13 August, 202135.8mph SWAverage August9.6mphStrongest 23 February, 202155.9mph SWAverage 202110.2mphClimate (2011–Present)Capel Curig Saws (16.2 miles)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 28 November, 201860.4mph SWAverage 2011–Present12.2mphWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average September27.5%15%2.5%CalmGaleSeptember Wind RoseSeptember (5 Year Average)5 Year Average Annual5 Year Average September40%21.25%2.5%CalmGaleGet an account to remove ads