I imagine if he makes a run in Chennai then he'll pull out of Sydney, just because he'll need time to get used to the Australian climate too, and its not something a pro does in one or two days, most people are down there about a week in advance. Though from what I'm hearing, its also very humid in India right now, so the climates may be a lot more similar than normal.
Only that they start play evening in Chennai and play well past midnight. Daytime is pretty intolerable there as you yourself said.
"The Fates lead those who Will, those who won't they drag."