A few weeks ago my flatmate and I took a 4 hour hike along the skyline Walkway. It takes you along the ridges just outside of Wellington.
The main problem we had was the wind, in some parts it felt like we were going to get pushed straight off the mountain. But everything worked out fine, we had beautiful weather and even came home with a little sunburn.
It was a beautiful hike to do on a Tuesday afternoon in New Zealand.