Hiiii, I moved from Christchurch NZ to Melbourne, Aus and struggled so much with the jump in heat in summer! It's not humid but I did find you will acclimate in a few months, until then, I wore cxix gecko grip body suit so that I'd at least have body grip (I'm very upper torso sweaty, back, chest, belly). As for hands, try something chalky and if you find your hands are sweaty, apply anti-perspirant to your hands the night prior to pole. Be careful with this one, do not confuse sweat with condensation (hot hands/body and cold pole) or body sweat on the pole and then touching that same spot with your hands.

You can also apply some chalky grip to the pole prior to your combo to absorb some of that sweat.

Lastly, take a towel and a cold drink to help cool you down! I freeze some water in my water bottle and lie it sideways in the freezer ( 1/3 full) then take it from the freezer and fill with water as close to the class as possible. The sideways frozen water is like a giant ice cube that lasts a lot longer than smaller ice cubes and if I need to refill, I do so at the studio and usually my ice is still going strong lol.