We climbed Hawkins Hill on a mild winter's night. Starting at 7pm at the Karori Wildlife centre (note - you can't drive up to Brooklyn Wind Turbine at night; and you can't park right at the wildlife centre either as they close the gates at about 7 - be careful!). It took us just over 3 hours there and back, about half of which was getting up to the wind turbine from the wildlife centre carpark.
A little breezy at the top but nothing to worry about. We were lucky to have a reasonably clear night with the moon peaking through and great views of Wellington's lights.
Quite a few possums around to excite the dog - watch out for the cyanide poison!