Data source
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Click any point on the chart to reveal the exact recorded value for that date. · Daily mean wind speed in km/h.
Wind Direction
Prevailing-direction distribution for the selected year. Sector length represents frequency; speed classes show the typical strength of winds from each direction. Days without a representative resultant direction are counted as Variable rather than forced into a compass sector.
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Direction frequencies use only days with usable wind-direction records. The rose follows the same city, source and year selected above.