Climate of the months: Wind direction 1000 hPa (Weather history)

The following graphic shows the average of the wind direction at 1000 hPa for August 2017.

Notice:

The following graphic shows a high pressure area in the northern hemisphere:

A low pressure area in the northern hemisphere appears like the following graphic:

In the southern hemisphere the pressure areas are rotating in the opposite direction because the Coriolis force is inverted. So the colors are also inverted.