Jeju vs Busan

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Busan edges ahead as the better destination in December. Busan offers 8 hours of daily sunshine with only 3 rain days, while Jeju sees 6 sunshine hours and 8 rain days.

Jeju is on the cooler side at 10°C, requiring warmer clothing. Busan is cooler at 8°C.

For travelers who prioritize dry weather, Busan is the stronger choice in December. Busan receives 2 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Jeju reaches an average high of 10°C (50°F) and drops to 6°C (43°F) at night during December. The daily temperature range is 4°C, meaning relatively stable temperatures from day to night.

Busan averages 8°C (46°F) for the high and 2°C (36°F) for the low, with a daily range of 6°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 December.

Jeju receives approximately 59 mm of rainfall across 8 rain days during December. You can expect rain roughly every other day.

Busan sees 28 mm over 3 rain days. That makes Busan the drier option by 5 rain days and 31 mm of total precipitation.

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