Is wind direction displayed based on True North or Magnetic North? February 26, 2020 22:53 Updated For all of Saildrone's forecasted data, wind direction is displayed as True North. Related articles Why are your wind forecasts sometimes different than those shown by my sailing instruments? Where does your forecast model come from? How I change my preferred weather units? What do the wind direction arrows mean? What do the precipitation percentages mean? Comments 0 comments Article is closed for comments.