People use a weather vane to determine the direction the wind is blowing. A weather vane can be a fancy, decorative item that sits high on a rooftop and adds character to a building, or it can be a simple tool you use only for function. The pointing arrow of a weather vane will move as the wind blows it. In this way, a gardener can take a quick glance at a weather vane and immediately know the direction of the wind. This can be valuable information when you are tending precious flowers and vegetables.
Use the compass to determine which direction is north, if you do not already know. Once you know which direction north is and are facing north, directly behind you is south, to your right is east and to your left is west.
Observe the weather vane for several seconds to determine which direction the arrow is pointing. Having already figured out the compass directions, you can then immediately know which direction the weather vane is pointing. A weather vane arrow points in the direction the wind is coming from.
Determine that if your weather vane is pointing to the south, then the wind is blowing from the south and this would be a "southerly wind." If the weather vane is pointing to the west, then the wind is blowing from the west and this would be a "westerly wind." If the weather vane is pointing toward the northeast, then the wind is blowing from the northeast and this would be a "northeasterly wind."