You can stay at Dickey's Flat campsite in the Karangahake Gorge. The campsite is free, but facilities are basic.
This is a standard campsite in the Tauranga area.
NZ weather
New Zealand topographic maps are available from DOC Visitor Centres
Follow the Outdoor Safety Code: 1. Plan your trip 2. Tell someone 3. Be aware of the weather 4. Know your limits 5. Take sufficient supplies
Safety