How to calculate the daily average wind speed
Daily average wind speed
The daily average wind speed has to be measured from 8 UTC current day to 7 UTC the next day, according to the DPRA Heat stress report. The wind speed is also measured in 0.1 meters, so the values has to be divided by 10 to get to a value in m/s.
The wind speed (hourly, daily average) can also be based on an other data source; Potentiele wind (UP): . These values are often a few 0.1 m/s higher than the values from the historical KNMI weather data table.
For more information on the KNMI historical weather data table and how to download this information please go to the Tutorial dutch model attributes (Heat Overlay)