Ambient Weather Support

If the wind direction is incorrect, it is likely a calibration issue. You must calibrate your wind vane to true north using markers on the wind vane. This procedure is described in your product User Manual.

Some other common mistakes.

1. Wind direction appears 180 degrees out of phase. Note that wind direction is based on the direction the wind is coming from, not going to. For example, you will hear on news reports that ‘the wind is from the North”.
2. Calibrate your direction to true north, not magnetic north.Declination is the difference between true north and magnetic north (compasses measure magnetic north).
   To determine declination:

   http://magnetic-declination.com/