Best Time Visit Milford Sound 2026: Seasonal Planning Guide Key Takeaways Peak summer December-February 2026 delivers warmest weather (15-22°C) and longest daylight (15+ hours) but attracts maximum crowds of 4,000+ daily visitors with cruise prices at NZ$115-165 Shoulder seasons March-May and September-November 2026 provide optimal value with 50% fewer crowds, […]