The best time to visit Waitangi, Chatham Islands, is during the warmer months, from November to April, when the weather is generally more settled and pleasant for exploring the islands.
During this period, you'll experience longer daylight hours and milder temperatures, typically ranging from 15°C to 20°C. This makes it ideal for outdoor activities such as exploring the rugged coastline, visiting the various historical sites, and enjoying the island's unique flora and fauna. Flights and accommodation are also more regular and readily available, providing a smoother travel experience.
For those interested in wildlife, particularly birdwatching, the breeding season for many native bird species also falls within these months, offering excellent opportunities to spot rare and endemic birds.