5 reasons for carnatic music season to be in December

I was wondering why they have the carnatic music season in December and I came up with the following reasons:

1. The cold weather helps them to sing aa-aa-aaaaaa-aaaa-aa easily with the shiver in their voice.
2. The sabhas don’t have to put on the AC as the weather is already cold.
3. The NRI’s have their Christmas and New Year holidays so they will also be able to attend and the sabhas get more collection.
4. If they sing earlier in the year, they may be blamed for the natural calamities of that year.
5. The caterers can serve the leftovers of the year outside the sabhas during the Katcheri.

If you can think of any other reasons please let me know.