Busan vs Jeju

Busan and Jeju are closely matched in May. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Busan sits in the comfortable travel range at 21°C. Jeju is also comfortable at 23°C.

For travelers who prioritize dry weather, Jeju is the stronger choice in May. Busan receives 3 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Busan reaches an average high of 21°C (70°F) and drops to 14°C (57°F) at night during May. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

Jeju averages 23°C (73°F) for the high and 15°C (59°F) for the low, with a daily range of 8°C. The 2°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in May.

Busan receives approximately 117 mm of rainfall across 8 rain days during May. You can expect rain roughly every other day.

Jeju sees 67 mm over 6 rain days. That makes Jeju the drier option by 2 rain days and 50 mm of total precipitation.

Both cities share similar humidity levels at 65%.