You can visit as the monsoon would be late this year. Make sure you wear comfortable (stretchable) clothing. Wearing tights one cannot climb the Edakkal caves. It is a marvel. Do not miss it. Also make sure you visit Phantom Rock on the way and the Waynad tribal museum. Regards Krishna
You should be able to. My friend and I did it in the rains and it was beautiful. carrying an umbrella is a good idea, though you might get sudden gusts of wind as you go up. Wear comfortable shoes with non-slippery soles.
Have fun! Its an incredible walk up. carry something light to eat as well.
Also see if you can do Chembra peak! All the best!