The Heaphy Track is one of my favourite New Zealand Great Walks (together with the Abel Tasman Coastal Track).
It’s a really well formed, medium 4-6 day walk, with absolutely cosy and nice huts with lots of atmosphere.
The scenery is unique and is changing so quickly, it’s just amazing. You’ll walk through a mixture of alpine scenery, Scottish highlandhills, magic forests, and tropical islands.
We did the Heaphy Track at the end of May and the weather was quite good, but I would say the track is worth walking in any time of the year.