Julie, that is what the Australian tropics are there for.
I am headed to the Kimberlys in four weeks and have a lot of ideas for night photography to build on an enduring interest in the genre.
Its true that by the time I get there it not be merely warm but rather hot.
Nonetheless, those clear nights would be ideal for starscapes.
AHHH yes...tropics... memories of the Kimberley drawing my mind to that incredibly beautiful landscape... Just make sure you've got the mozzie repellent... we needed it everywhere we went from Karratha to Halls Creek...and down to Alice... even at midnight when we thought the little buggers would be asleep!!
Have a wonderful time..with my fun friends Christian and Nick at Home Valley?