This is the 5058th most frequent Polish word.
południowego
"Southern" or "of the south."
In this sentence, 'południowego' is an adjective derived from 'południe' (south) and describes the direction the wind is blowing from.
Wiatr wieje z kierunku południowego.
The wind is blowing from the southern direction.
Here, 'południowego' modifies 'obiadu' (lunch) and can imply the time or style of the lunch, related to the south.
Podczas południowego obiadu omówiliśmy plany na weekend.
During the southern lunch, we discussed plans for the weekend.
In this phrase, 'południowego' refers to the 'southern' slope of the mountain, providing a geographical description.