I can't really say sense we don't get much rain. If we get rain at all it happens in our cool season which is now pretty much past. We have had quit a bit this year but they didn't seem any less playful, talkitive ect than normal.
Its early autumn here in Australia and we are beginning to get some cold mornings. Our Conures seem to be pretty playful but what I find surprising is the fact that they will have a bath (in their drinking water) at least twice a day! Even early morning when its cold!
I've put in a bird bath but they keep using their drinking water . . and they go completely under the water!
Our Cockatiel seems to be exactly the same all year round.