Let me put it this way - its 10.30pm and still 35 degrees celcius with 60% humidity!!

It's still hot and will continue to be hot until the end of September. We normally get a couple of months a year (December/January/February) where you might need a jacket but other then that not really.

I'd bring a couple of really light sweaters/jackets just for inside the shopping malls & restaurants as the air conditiong can sometimes be really cold after being out in the heat.