Busan, South Korea Climate & Monthly Averages
The climate of Busan
Located in South Korea, Busan experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 84°F (29°C) in August and dip to about 44°F (7°C) in January, with around 60.6 inches (1539 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: August - highs near 84°F (29°C)
- Coldest month: January - highs near 44°F (7°C)
- Record high: 94°F (34°C) · Record low: 9°F (-13°C) (2015–2024)
- Wettest month: July (15 rainy days) · Sunniest: August (10.1 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 84°F (29°C) and overnight lows stay near 75°F (24°C). The coolest month is January, with typical highs of 44°F (7°C) and lows around 29°F (-2°C). Based on 2015–2024 weather data, temperatures have reached as high as 94°F (34°C) and dropped as low as 9°F (-13°C).
Rain, sun and snow
July is usually the wettest month. It brings about 10.6 inches (269 mm) of rain over 15 days, while December is the driest. August brings the most sunshine, averaging 10.1 hours of sun a day. Snowfall is rare but not unheard of.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 44° | 29° | 4 | 1.6 in | 7.7 h/day | 57% |
| February | 48° | 32° | 6 | 2.1 in | 8.5 h/day | 59% |
| March | 56° | 40° | 8 | 3.7 in | 8.7 h/day | 68% |
| April | 63° | 49° | 8 | 5.0 in | 8.9 h/day | 72% |
| May | 70° | 57° | 8 | 4.6 in | 9.8 h/day | 76% |
| June | 75° | 65° | 10 | 7.7 in | 9.0 h/day | 83% |
| July | 81° | 73° | 15 | 10.6 in | 8.6 h/day | 88% |
| August | 84° | 75° | 14 | 8.0 in | 10.1 h/day | 83% |
| September | 77° | 68° | 13 | 10.2 in | 7.8 h/day | 80% |
| October | 69° | 56° | 6 | 3.7 in | 8.3 h/day | 72% |
| November | 59° | 44° | 4 | 2.1 in | 8.0 h/day | 67% |
| December | 47° | 32° | 4 | 1.4 in | 7.8 h/day | 59% |
Busan month by month
Busan weather in January
January brings highs around 44°F (7°C), lows near 29°F (-2°C), about 4 wet days - typically the coldest month of the year in Busan.
Busan weather in February
February brings highs around 48°F (9°C), lows near 32°F (0°C), about 6 wet days.
Busan weather in March
March brings highs around 56°F (13°C), lows near 40°F (4°C), about 8 wet days.
Busan weather in April
April brings highs around 63°F (17°C), lows near 49°F (9°C), about 8 wet days.
Busan weather in May
May brings highs around 70°F (21°C), lows near 57°F (14°C), about 8 wet days.
Busan weather in June
June brings highs around 75°F (24°C), lows near 65°F (18°C), about 10 wet days.
Busan weather in July
July brings highs around 81°F (27°C), lows near 73°F (23°C), about 15 wet days - typically the wettest month of the year in Busan.
Busan weather in August
August brings highs around 84°F (29°C), lows near 75°F (24°C), about 14 wet days - typically the hottest month and the sunniest month of the year in Busan.
Busan weather in September
September brings highs around 77°F (25°C), lows near 68°F (20°C), about 13 wet days.
Busan weather in October
October brings highs around 69°F (21°C), lows near 56°F (13°C), about 6 wet days.
Busan weather in November
November brings highs around 59°F (15°C), lows near 44°F (7°C), about 4 wet days.
Busan weather in December
December brings highs around 47°F (8°C), lows near 32°F (0°C), about 4 wet days - typically the driest month of the year in Busan.
Seasons in Busan
Spring (March through May)
Spring in Busan stays on the cool side of mild, with daytime highs averaging 63°F (17°C) and nights around 48°F (9°C); expect showers on roughly 24 days across the season.
Summer (June through August)
Summer in Busan is mild and warm, with daytime highs averaging 80°F (27°C) and nights around 71°F (22°C); expect showers on roughly 40 days across the season.
Fall (September through November)
Fall in Busan is pleasantly warm, with daytime highs averaging 69°F (20°C) and nights around 56°F (13°C); expect showers on roughly 23 days across the season.
Winter (December through February)
Winter in Busan is chilly, with daytime highs averaging 46°F (8°C) and nights around 31°F (-1°C); rain falls on about 14 days over the three months.
Climate questions, answered
What is the average temperature in Busan?
Is Busan hot in summer?
Is Busan cold in winter?
How many rainy days does Busan get in a year?
Best time to visit Busan
The best time to visit Busan is generally April to June and October to November, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 67°F (20°C).
Pack for Busan with a warm jacket and layers for the cooler season; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - August nights average 75°F (24°C).
Busan temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.