Busan weather in December
December is one of the least pleasant months in Busan: highs of 8°C (46°F) and about 33 mm (1.3 in) of rain on average. Nights average 1°C (34°F) and cloud cover 52% (NASA POWER, 2001–2025 averages). The sea averages 14°C (58°F). It is the 2nd driest month of the year and the 2nd coolest. Compared with November, it is cooler and drier; January brings highs of 6°C (42°F) and 30 mm (1.2 in) of rain.
Figures are long-term averages for Busan, the largest city in Busan. See below for other places.
Is December a good time to visit Busan?
least pleasant month Weather score 47/100.
December is one of the least pleasant months for weather in Busan. For better conditions, consider Oct–Nov.
Does it rain a lot in Busan in December?
No, it is usually dry: about 33 mm (1.3 in) falls in an average December. It is the 2nd driest month of the year.
How warm is Busan in December?
Days average 8°C (46°F) and nights 1°C (34°F).
Busan weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 6°C (42°F) | -1°C (30°F) | 30 mm | 55% | 13°C (55°F) | least pleasant |
| February | 8°C (46°F) | 1°C (33°F) | 52 mm | 60% | 12°C (53°F) | least pleasant |
| March | 12°C (53°F) | 4°C (39°F) | 79 mm | 57% | 12°C (53°F) | fair |
| April | 17°C (62°F) | 9°C (47°F) | 137 mm | 58% | 14°C (57°F) | fair |
| May | 21°C (69°F) | 13°C (56°F) | 144 mm | 62% | 17°C (62°F) | fair |
| June | 24°C (75°F) | 18°C (64°F) | 175 mm | 73% | 21°C (69°F) | fair |
| July | 26°C (80°F) | 22°C (72°F) | 299 mm | 73% | 23°C (74°F) | least pleasant |
| August | 28°C (82°F) | 24°C (74°F) | 244 mm | 66% | 28°C (83°F) | least pleasant |
| September | 25°C (76°F) | 19°C (67°F) | 176 mm | 67% | 27°C (81°F) | fair |
| October | 20°C (68°F) | 13°C (56°F) | 75 mm | 54% | 24°C (74°F) | best |
| November | 14°C (58°F) | 7°C (45°F) | 46 mm | 51% | 19°C (66°F) | best |
| December | 8°C (46°F) | 1°C (34°F) | 33 mm | 52% | 14°C (58°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months
Weather across Busan in December
Weather can differ a lot within Busan: coasts, hills and mountains each have their own climate.