Final answer:
Wind direction indicates where wind originates from, so a south wind blows from the south towards the north.
Step-by-step explanation:
When someone says that the wind direction today is south, it means that the wind is blowing from the south towards the north. This is because wind directions are named based on where the wind is coming from. Similarly, if the wind direction were east, the wind would be blowing from the east toward the west.