Weather in Busan

Live weather and 7-day forecast for Busan, South Korea, followed by what to expect in each month of the year.

Sunrise 06:37 Sunset 17:41 Daylight 11h 4m Sun times →

Climate in Busan: month by month

Averaged over 2023–2025, the warmest month in Busan is August, with highs around 31 °C (88 °F) and lows around 24 °C (75 °F); the coolest is January, with highs around 7 °C (44 °F) and lows around -3 °C (26 °F). Average lows fall below freezing in December–February.

Busan gets about 1,625 mm (64 in) of precipitation a year. The wettest month is July (262 mm over about 15 days) and the driest is December (43 mm).

Month	Avg high	Avg low	Precipitation (mm)	Wet days	Daylight
January	7°	-3°	44	5	10h 2m
February	9°	-1°	59	7	10h 54m
March	14°	4°	82	10	11h 55m
April	19°	9°	113	10	13h 3m
May	22°	13°	177	10	14h 0m
June	27°	19°	237	11	14h 31m
July	30°	23°	262	15	14h 19m
August	31°	24°	226	16	13h 31m
September	28°	21°	185	15	12h 26m
October	22°	13°	144	9	11h 21m
November	15°	5°	53	3	10h 21m
December	8°	-1°	43	4	9h 48m

Averages of daily values from the ERA5 reanalysis for 2023–2025 at Busan's coordinates (model elevation 26 m), via Open-Meteo (CC BY 4.0). Three recent years are not a 30-year climate normal; reanalysis smooths local extremes and tends to count more light-rain days than a rain gauge would. Daylight is sunrise to sunset on the 15th of each month.

Weather questions for Busan

What is the hottest month in Busan?

August, with average highs of 31 °C (88 °F) and lows of 24 °C (75 °F) over 2023–2025. The coolest month is January, averaging 7 °C (44 °F) by day and -3 °C (26 °F) at night.

What is the rainiest month in Busan?

July, with about 262 mm of precipitation on roughly 15 days. The driest month is December (43 mm), and the yearly total is around 1,625 mm.

When is the weather mildest in Busan?

Going by the averages, April–June and October are the months with average daytime highs between 18 °C and 27 °C (64–81 °F) — warm but not hot. July is the month most likely to bring rain.

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About this forecast

The live forecast comes from Open-Meteo, which blends models from national weather services and is fetched fresh in your browser on each visit. Times in the hourly outlook are Busan local time (Asia/Seoul).