In March, the Earth is in its vernal equinox. This means the sun's rays hit the equator directly. During the vernal equinox, neither the north nor the south pole is tilted towards the sun.
Therefore, the south end of the axis is not tilted towards the sun in March.
However, it is important to note that the Southern Hemisphere is experiencing autumn during March. This means the days are getting shorter and the nights are getting longer in the Southern Hemisphere.