Yes, I would use a 25w bulb to give your cham a hot spot to bask. Shouldn't be over 32c. Ambient temps may be high and you might struggle with having really high humidity. I don't think i've ever said that haha. Also you'd want proper UVB lighting aswell.
You should be fine though, You're living in conditions close to madagascar anyways
Just make sure you have plenty of ventilation for your cage (full mesh).