Kaikoura in May

Whales are here year-round, but conditions vary dramatically by season. Summer (December-February) brings warm weather and calm seas, perfect for boat trips. But it's also peak tourist season with higher prices and crowded tours. Autumn (March-May) offers the sweet spot — fewer crowds, stable weather, and migrating whales. Winter (June-August) can be rough with cancelled boat tours due to weather, though the snow-capped mountains look incredible. Spring (September-November) sees wildflowers blooming along coastal walks and whale activity picking up. October through March generally offers the most reliable whale-watching conditions. Book tours for early morning when seas are typically calmer. Check weather forecasts closely — Kaikoura can go from sunshine to storms quickly due to its exposed coastal location.