What to expect in Jeju Island in December
December is a quiet, off-peak month in Jeju Island: 10° / 3°, plenty of space at the main sights and some of the best deals of the year. Great if you value space over perfect conditions.
Jeju Island weather in December
Typical conditions in Jeju Island during December, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 10°C 50°F |
|---|---|
| Average low | 3°C 37°F |
| Rainfall | Dry 20/100 |
| Total rainfall | 56 mm2.2 in |
| Rainy days | 12 |
| Sea temperature | 17°C 62°F |
| Daylight | 9 h 57 min |
| How it feels | Cool |
Average highs sit around 10°C with lows near 3°C. It is one of the drier months — pack light.
Crowds & demand
Crowd levels are Low for Jeju Island — plenty of space at the main sights.
Prices & value
This month counts as low season: some of the best deals of the year.
What to pack
Proper cold-weather kit — a warm mid-layer, windproof outer, hat and gloves. Days peak near 10°C and nights fall to about 3°C. Rain gear is largely optional this month, which keeps your bag light.
What it costs
This is one of the cheaper months to visit Jeju Island. Flights and accommodation sit near their yearly floor, and you can usually book late without being punished for it. Compared with the most expensive month of the year, you are looking at roughly 50% less.
Who this month suits
- Anyone travelling on a budget
- People who would rather have space than perfect conditions
Events & what’s on
No major festivals fall in December, so the destination feels like its everyday self.
Jeju Island in December compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| October | 21° / 14° | Moderate | $$ | 59 |
| November | 16° / 9° | Moderate | $$ | 63 |
| December · This month | 10° / 3° | Low | $ | 60 |
| January | 8° / 1° | Low | $ | 58 |
| February | 9° / 2° | Low | $ | 59 |
These months score higher for Jeju Island on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in December
If the destination is negotiable but the month is not, these places are at their best in December.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
