Weather Comparison
Side-by-side weather comparison for December
| Metric | Busan | Jeju | Better |
|---|---|---|---|
| Average HighHigher is warmer | 6°C (43°F) | 7°C (45°F)▲ | Jeju |
| Average LowHigher is milder | -2°C (28°F) | -1°C (30°F)▲ | Jeju |
| Rain DaysFewer is drier | 3 days | 3 days | Tie |
| PrecipitationLess is drier | 30 mm | 30 mm | Tie |
| Sunshine HoursMore is sunnier | 1h/day | 1h/day | Tie |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 2 | 2 | Tie |
| Wind SpeedCalmer is better | 15 km/h | 15 km/h | Tie |
Busan and Jeju are closely matched in December. 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 is on the cooler side at 6°C, requiring warmer clothing. Jeju is cooler at 7°C.
For travelers who prioritize dry weather, both cities are equally dry in December.
Busan reaches an average high of 6°C (43°F) and drops to -2°C (28°F) at night during December. The daily temperature range is 8°C, meaning moderate variation throughout the day.
Jeju averages 7°C (45°F) for the high and -1°C (30°F) for the low, with a daily range of 8°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 December.
Busan receives approximately 30 mm of rainfall across 3 rain days during December. Rain is occasional, so a light rain jacket should suffice.
Jeju sees 30 mm over 3 rain days. Both cities are equally rainy this month.
Both cities share similar humidity levels at 65%.
Highs of 6°C, lows of -2°C, 3 rain days
Highs of 7°C, lows of -1°C, 3 rain days
Pack for both: heavy winter coat, thermal base layers, warm gloves and hat, insulated boots, a warm scarf. These items are useful in either destination during December.
The table below shows average high temperatures and rain days for every month. December is highlighted for quick reference.
| Month | Busan | Jeju | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 8°C | 3d | 8°C | 3d |
| Feb | 11°C | 3d | 12°C | 3d |
| Mar | 15°C | 4d | 16°C | 4d |
| Apr | 20°C | 5d | 20°C | 5d |
| May | 23°C | 6d | 23°C | 6d |
| Jun | 24°C | 6d | 25°C | 6d |
| Jul | 23°C | 6d | 23°C | 6d |
| Aug | 20°C | 5d | 20°C | 5d |
| Sep | 15°C | 4d | 16°C | 4d |
| Oct | 11°C | 3d | 12°C | 3d |
| Nov | 8°C | 3d | 8°C | 3d |
| Dec | 6°C | 3d | 7°C | 3d |
Busan Weather in December
Full forecast, packing tips, and activities
Jeju Weather in December
Full forecast, packing tips, and activities