Climate and monthly weather forecastBusan, South Korea
Climate and monthly weather forecast
The climate of Busan
Under the Köppen climate classification, Busan is categorized as having a Humid subtropical climate comprising of a non-existent dry season. Positioned in the southeastern region of South Korea, it strikes a balance between humidity, heat, and precipitation, giving rise to four distinct seasons.Over the course of twelve months, the city's climate spans from immediate dips in temperature to precipitous leaps. With temperatures fluctuating from a low of 1.2°C (34.2°F) in the beginning months, they see a hike to a peak of 27.9°C (82.2°F) in August. Humidity sees slight alterations across the year, generally hovering at around 60%, and peaking at 81% to 87% during the summer months.
Rainfall takes on a descending order pattern beginning with a below-average 14mm (0.55") in January, an increase to 97mm (3.82") at its peak in July before returning to 12mm (0.47") in December. The highest number of rainy days is observed in August with 14.1 days, whereas the least amount can be seen in January with 4.6 days. Additionally, detectable snowfall only occurs in November with 1mm (0.04").
Shedding light on unique weather conditions, the highest sea temperatures of 26.3°C (79.3°F) are noticed in August and lowest in February at 13.3°C (55.9°F). Wind speeds scale from a high of 20.3km/h (12.6mph) to a lower limit of 13.6km/h (8.5mph). Interestingly, the highest UV index is noted in July, whereas the lowest occurs in the winter months of January and December.
The best time to visit Busan
The most favorable time for a visit to Busan is during the stable, dry periods from March to June and from September to November. During these times, the weather remains pleasantly warm ranging from 11.8°C (53.2°F) to 20.1°C (68.2°F) with moderate humidity levels of 64% to 74%. The length of daylight varies from 12 hours to 14 hours, offering ample time to explore this vibrant city. Notably, the sun shines for nearly 7.6 to 9.8 hours a day providing visitors with an abundance of sunlight.The worst time to visit Busan
Contrarily, the least welcoming period to tour Busan is when it reaches its peak humidity levels, ranging from 81% to 87%, in the heart of the summer months, from June to August. Complemented by soaring temperatures with a high of 27.9°C (82.2°F) and a considerable increase in the volume of rainfall, reaching 97mm (3.82") to 69mm (2.72"), this time of year can be quite uncomfortable for visitors.Spring weather in Busan
Spring in Busan is lightly breezy with temperatures escalating from 6.1°C (43°F) to 20.1°C (68.2°F) between March to May. There is a gentle increase in humidity from 64% to 74% across these months as the season transitions into summer. Rainfall begins to pick up from 27mm (1.06") to 37mm (1.46") with rainy days increasing from 8.5 to 7.8. Daylight hours span from 12 to 14 hours, granting an extended period to relish the surroundings.Summer weather in Busan
The summer season, which lasts from June to August, has the city under a heat spell with temperatures soaring to a scorching 27.9°C (82.2°F). The humidity persists in high 80s, making it feel hotter than the actual temperature. Rainfall experiences a sharp growth to 97mm (3.82") in July before receding to 69mm (2.72") in August and the number of rainy days peaks at 14.1 in August. Sunshine hours reduce slightly from 9.5 to 8.8 hours. However, the hours of daylight remain around 14 hours, a delightful prospect for daytime activity enthusiasts.Autumn weather in Busan
Following summer, the pendulum swings toward more pleasant conditions in Autumn, lasting from September to November. Temperatures gradually descend from 24.5°C (76.1°F) to 14.5°C (58.1°F) and humidity also sees a comfortable drop from 76% to 64%. The rainfall subsides considerably to 29mm (1.14") in October, and the number of rainy days decreases from 9.1 to 6.4. Though daylight hours begin to reduce from 12.4 to 10.3, sunshine hours remain appreciable at around 7 hours, fostering suitable conditions for sightseeing.Winter weather in Busan
The winter season encloses Busan in a chilly embrace with temperatures plummeting to 1.2°C (34.2°F) along with a dip in humidity levels to 60% in January. Rainfall recedes to a year-round low of 14mm (0.55") in January and 12mm (0.47") in December, while snowfall, though scarce at 1mm (0.04"), can be experienced in November. The number of daylight hours reduces to 9.8 in December, and sunshine hours hover around 6 hours a day. Therefore, visitors during this season must prepare for shorter days and low temperatures. Despite the cold, this period hosts numerous winter festivals appealing to a broad spectrum of tourists.Weather in January
January in Busan, South Korea, experiences the coldest temperatures of the year with a low of 1.2°C (34.2°F) and a high of 6.1°C (43°F). Relative humidity stands at 60%, indicating dry air. As the start of the year, it serves as a crucial period marking the transition from the chilly winter to the mild spring conditions. Weather in January »Weather in February
February ushers in a slight warming trend in Busan, with average temperatures increasing from the January lows. Notably, relative humidity remains consistent at 60%, ensuring clear visibility of 10km (6.2mi) across the city. It might be winter, but the city records an average of 10.9 daylight hours, a significant improvement from the previous month. Weather in February »Weather in March
March signifies the arrival of spring in Busan, marked by moderate temperatures, with average highs of 11.8°C (53.2°F). Notably, the daylight hours progressively increase to 12 hours, offering an ample time to explore the city. Weather in March »Weather in April
In April, Busan basks under warmer temperatures averaging between 10.7°C (51.3°F) and 15.4°C (59.7°F). Longer daylight hours mark the full swing of spring, prevalent with blooming flowers around the city parks. The wind speed starts to decrease, from 18.6km/h (11.6mph) in the previous month to 17.5km/h (10.9mph). Weather in April »Weather in May
In May, Busan ushers in the pre-summer season, with temperatures soaring as high as 19.8°C (67.6°F). Signifying the end of spring, the city experiences gradually increasing humidity levels. Longer hours of daylight provide an extended period to undertake outdoor activities. Weather in May »Weather in June
June in Busan signifies the beginning of the hot summer season, marked by warm temperatures with an average high of 22.8°C (73°F). Humidity levels spike to 81%, making the heat relatively intense. Despite the dramatic change in weather conditions, wind speed dips slightly, contributing to the stifling feel. Weather in June »Weather in July
July in Busan achieves the highest rainfall level of the year, recording a significant 97mm (3.82"). This heavy rainfall is accompanied by the highest temperatures of the year, reaching up to 25.8°C (78.4°F). Despite the high temperatures and humidity, sea temperatures also peak to 23.7°C (74.7°F), supporting various water sports. Weather in July »Weather in August
In August, Busan temperature reaches the year's peak with an average high of 27.9°C (82.2°F). This is accompanied by a marked drop in rainfall from July's peak to 69mm (2.72"). The sea temperature warms further, averaging 26.3°C (79.3°F), ideal for swimming and other aquatic activities. Weather in August »Weather in September
September brings a gradual cooling trend to Busan, with temperatures dropping from August highs to a comfortable 24.5°C (76.1°F). Despite this decline, the city experiences the same amount of rainfall as in August, about 69mm (2.72"). Weather in September »Weather in October
October in Busan is a transition period from the warm summer to the cooler autumn, with temperatures ranging between 16°C (60.8°F) and 20.1°C (68.2°F). Notably, the rainfall drastically reduces to 29mm (1.14"), signalling the end of the wet season. Weather in October »Weather in November
In November, Busan experiences noticeably cooler temperatures, with highs receding to 14.5°C (58.1°F), hinting at the approaching winter. November is considered a drier month, having the year's second-lowest rainfall at 16mm (0.63"). Weather in November »Weather in December
December in Busan marks the year's end with a definite return to winter, featuring temperatures as low as 3.7°C (38.7°F). This month receives the lowest amount of rainfall, recorded at 12mm (0.47"), signalling the onset of cold, dry conditions. Weather in December »Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Busan, the average lowest temperatures are observed in January, with a high of 6.1°C (43°F) and a low of 1.2°C (34.2°F).
The months with the lowest humidity in Busan are January and February, with an average relative humidity of 60%.
In Busan, South Korea, during the entire year, the rain falls for 98 days and collects up to 496mm (19.53") of precipitation.
In Busan, snow does not fall in January through October and December.
In Busan, South Korea, during the entire year, snow falls for 2.1 days and aggregates up to 1mm (0.04") of snow.
The months with the least sunshine are January and November, with an average of 6.3h of sunshine.
The months with the lowest UV index in Busan are January and December, with an average maximum UV index of 2.
The month with the coldest seawater in Busan is March, with an average sea temperature of 13.3°C (55.9°F).
With an average of 14h and 30min of daylight, June has the longest days of the year.
July is the most humid month in Busan, South Korea, with an average relative humidity of 87%.
The month with the most rainfall in Busan is July, when the rain falls for 13.3 days and typically aggregates up to 97mm (3.82") of precipitation.
With an average maximum UV index of 7, July is the month with the highest UV index in Busan, South Korea.
August is the month that records the highest temperatures, with averages ranging from a high of 27.9°C (82.2°F) to a low of 24.7°C (76.5°F).
The month with the warmest seawater is August, with an average sea temperature of 26.3°C (79.3°F).
August has the most sunshine of the year in Busan, South Korea, with an average of 10h of sunshine.
The only month with snowfall in Busan, South Korea, is November.
November is the month with the most snowfall. Snow falls for 0.1 days and accumulates 1mm (0.04") of snow.
December is the month with the least rainfall in Busan. Rain falls for 4.9 days and accumulates 12mm (0.47") of precipitation.
With an average of 9h and 48min of daylight, December has the shortest days of the year.
Busan, South Korea, does not utilize Daylight Saving Time (DST). KST timezone is used over the entire year.
Average temperature
Busan, South Korea
The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (6.1°C).
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (1.2°C).
Average pressure
Busan, South Korea
- Average pressure in January:
1023.3mbar - Average pressure in February:
1022mbar - Average pressure in March:
1019mbar - Average pressure in April:
1015.3mbar - Average pressure in May:
1011.7mbar - Average pressure in June:
1007.9mbar
- Average pressure in July:
1007.6mbar - Average pressure in August:
1008.3mbar - Average pressure in September:
1013.1mbar - Average pressure in October:
1018.1mbar - Average pressure in November:
1021.2mbar - Average pressure in December:
1022.6mbar
The month with the highest atmospheric pressure is January (1023.3mbar).
The month with the lowest atmospheric pressure is July (1007.6mbar).
Average wind speed
Busan, South Korea
- Average wind speed in January:
19.1km/h - Average wind speed in February:
18.3km/h - Average wind speed in March:
18.6km/h - Average wind speed in April:
17.5km/h - Average wind speed in May:
14.9km/h - Average wind speed in June:
13.6km/h
- Average wind speed in July:
15.5km/h - Average wind speed in August:
16.9km/h - Average wind speed in September:
17.7km/h - Average wind speed in October:
18.4km/h - Average wind speed in November:
17.3km/h - Average wind speed in December:
19.3km/h
The windiest month (with the highest average wind speed) is December (19.3km/h).
The calmest month (with the lowest average wind speed) is June (13.6km/h).
Average humidity
Busan, South Korea
The month with the highest relative humidity is July (87%).
The months with the lowest relative humidity are January and February (60%).
Average rainfall
Busan, South Korea
The wettest month (with the highest rainfall) is July (97mm).
The driest month (with the least rainfall) is December (12mm).
Average rainfall days
Busan, South Korea
- Average rainfall days in January:
4.6 days - Average rainfall days in February:
5.2 days - Average rainfall days in March:
8.5 days - Average rainfall days in April:
8.8 days - Average rainfall days in May:
7.8 days - Average rainfall days in June:
9.2 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
14.1 days - Average rainfall days in September:
9.1 days - Average rainfall days in October:
6.1 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
4.9 days
The month with the highest number of rainy days is August (14.1 days).
The month with the least rainy days is January (4.6 days).
Average snowfall
Busan, South Korea
The month with the highest snowfall is November (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and December (0mm).
Average snowfall days
Busan, South Korea
- Average snowfall days in January:
0.7 days - Average snowfall days in February:
0.7 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0.5 days
The months with the highest number of snowfall days are January and February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature
Busan, South Korea
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is March (13.3°C).
Average daylight / Average sunshine
Busan, South Korea
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
7h and 0min - Average sunshine in March:
7h and 36min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 48min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
8h and 48min - Average sunshine in August:
10h and 0min - Average sunshine in September:
7h and 42min - Average sunshine in October:
6h and 42min - Average sunshine in November:
6h and 18min - Average sunshine in December:
6h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and November (Average sunshine: 6h and 18min).
Average sunshine days
Busan, South Korea
- Average sunshine days in January:
25.3 days - Average sunshine days in February:
20.8 days - Average sunshine days in March:
21.3 days - Average sunshine days in April:
19.8 days - Average sunshine days in May:
22.9 days - Average sunshine days in June:
19.8 days
- Average sunshine days in July:
15.4 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
19.1 days - Average sunshine days in October:
23.4 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
24.4 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is August (14.8 days).
Average UV index
Busan, South Korea
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Busan, South Korea
The month with the most cloud cover is July (Cloud cover 45).
The month with the least cloud cover is December (Cloud cover 25).
Average visibility
Busan, South Korea
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
