Hi Margie, generally summer clothes as it can be very hot in Sydney and Melbourne. However I would put in a light jacket and cardigan/pullover as like most places in the world we do get unseasonal weather at times (I'm from near Sydney). I have been to New Zealand twice and it is quite a bit cooler than you might expect, especially the southern areas as it is getting closer to Antartica. Also be prepared for rain. The "sounds" in NZ get those lovely waterfalls from lots of rain.