Canola flower fields bloom bright yellow in April — Jeju's most photogenic season. Weather is mild but windy. Great for Hallasan hiking and coastal drives.

Beach season with clear blue waters. Typhoon risk in late summer. Humid but cooler than mainland. Perfect for diving and water sports at Jungmun Beach.

Hallasan's autumn foliage is stunning in October-November. Silver grass (억새) fields at Saebyeol Oreum are a must-see. Comfortable temperatures for outdoor activities.

The warmest winter in Korea — rarely below freezing. Mandarin orange picking season. Hallasan occasionally gets snow at the summit. Fewer tourists, great deals on accommodation.