Milford Sound, in Fiordland National Park, is a glacier-carved fiord where sheer cliffs rise more than a kilometer straight from dark water. Among the wettest inhabited places on Earth, its frequent rain feeds hundreds of temporary waterfalls that pour from the cliffs.
Summer (December–February) brings the warmest weather and long days, while rainy spells unleash the waterfalls at full force; winter is quieter with snow-capped peaks.
Te Anau, the nearest town, serves the day-trip crowd; fresh Fiordland crayfish and South Island lamb feature on regional menus.
Te Anau is the practical base for visiting Milford Sound, about two hours by road, with limited lodge accommodation closer to the fiord itself.
Rain is the norm rather than the exception, so weatherproof gear is essential; the cliffs are at their most alive with waterfalls running mid-storm or just after.
Read more in New Zealand: The Southern Alps & Fiordland.