I have discussed how matrifocal tradition viewed semen as nurture and equated it with the rain. This idea was in contrast to patrifocal idea of the womb as nurture and its identification with the earth. As an example for matrifocal ideas getting mixed with patriarchal gods, I had talked about northern Indian tradition of women stripping to please the rain god, Indra.
Now, it appears this tradition could be found in Dravidian lands too. I wonder whether the idea was again a syncretization of the older matrifocal world view with the later partrifocal ideas independently in South or it came to South because of the northern migrations.
The article doesn't say who the aroused rain god is. Most likely Indra and not Varuna.
Newspaper article h/t: Nirmuka Facebook page.