Busan vs Jeju

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Busan edges ahead as the better destination in May. Busan offers 10 hours of daily sunshine with only 8 rain days, while Jeju sees 9 sunshine hours and 10 rain days.

Busan sits in the comfortable travel range at 21°C. Jeju is also comfortable at 20°C.

For travelers who prioritize dry weather, Busan is the stronger choice in May. Busan receives 1 more hour 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 20°C (68°F) for the high and 15°C (59°F) for the low, with a daily range of 5°C. The two cities feel quite similar in terms of temperature.

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 129 mm over 10 rain days. That makes Busan the drier option by 2 rain days and 12 mm of total precipitation.

Humidity also differs: Busan averages 65% while Jeju sits at 70%. Jeju will feel muggier, especially at higher temperatures.