The best time to go to Milford Sound is during the spring (September to November) and autumn (March to May) months, as these periods offer a good balance of pleasant weather and fewer crowds.Spring provides a wonderful opportunity to see the waterfalls at their most impressive, fed by melting snow and frequent rainfall. The surrounding landscape bursts into life with new growth, and the temperatures are generally mild, making outdoor activities very enjoyable. You'll find the popular boat cruises and scenic flights are readily available without the peak season rush.Autumn is another excellent choice, with comfortable temperatures and the added beauty of changing foliage, though this is less prominent in Milford Sound itself compared to other parts of New Zealand. The rainfall tends to be less frequent than in spring, leading to clearer days, which are ideal for photography and exploring the walking tracks.