if you think maximums between 14-16 to be warm.
It will be quite warm in Auckland:-)
Always pack thermals & raincoat for Tas, even if they stay at the bottom of your bag...I don't think I'll need the former for Darwin though.
Definitely pack the warm clothes. Things can shift around 9 days out, but at this stage it looks like it might only be around 10-12 at the event site (which is 300-400m elevation) on Sunday.