Global CityIntelligence

Climate

Climate in Busan

Busan, South Korea has a humid subtropical climate. The annual average temperature is about 19.7°C and the city receives roughly 1300 mm of precipitation across 145 rainy days a year, with around 1200 hours of sunshine. The warmest month is Jul (highs near 30.2°C) and the coldest is Jan (lows near 9.2°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Climate zone
Humid Subtropical
Comfort score
78/100

Climate overview

Busan, South Korea has a humid subtropical climate. The annual average temperature is about 19.7°C and the city receives roughly 1300 mm of precipitation across 145 rainy days a year, with around 1200 hours of sunshine. The warmest month is Jul (highs near 30.2°C) and the coldest is Jan (lows near 9.2°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Climate zone

Köppen-style classification derived deterministically from latitude and regional precipitation regime.

Climate zone

Busan is classified as Humid Subtropical. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Average temperatures

Annual averages and seasonal extremes.

Average temperatures

  • Annual average19.7°C
  • Warmest monthJul (30.2°C)
  • Coldest monthJan (9.2°C)
  • Comfort score78/100

Rainfall overview

Annual precipitation and how it is distributed across the year.

Rainfall overview

Busan receives about 1300 mm of precipitation a year over roughly 145 rainy days. The wettest month is Jul and the driest is Jan.

Sunshine overview

Estimated annual sunshine and its seasonal pattern.

Sunshine overview

Busan sees an estimated 1200 hours of sunshine a year, concentrated in the warmer months around Jul.

Monthly climate table

Month-by-month estimates of temperature, rainfall, rainy days, and sunshine.

Monthly climate table

Busan monthly climate table
MonthHighLowRainRainy DaysSunshine
Jan18.2°C9.2°C83 mm9105 h
Feb19°C10°C83 mm9109 h
Mar21.2°C12.2°C106 mm1293 h
Apr24.2°C15.2°C106 mm12104 h
May27.2°C18.2°C122 mm1493 h
Jun29.4°C20.4°C128 mm14100 h
Jul30.2°C21.2°C139 mm1589 h
Aug29.4°C20.4°C133 mm1587 h
Sep27.2°C18.2°C122 mm1493 h
Oct24.2°C15.2°C100 mm11115 h
Nov21.2°C12.2°C89 mm10111 h
Dec19°C10°C89 mm10101 h

Best months to visit

Months with the mildest temperatures and lower rainfall, by the deterministic comfort heuristic. Not a tourism ranking.

Best months to visit

By temperature and rainfall, the most comfortable months in Busan are Nov, Oct, Feb. Conditions vary year to year — verify with a current forecast before booking.

Seasonal summary

Average conditions by season.

Seasonal summary

  • Winter

    19°C / 10°C

    255 mm rain

  • Spring

    24°C / 15°C

    334 mm rain

  • Summer

    30°C / 21°C

    400 mm rain

  • Autumn

    24°C / 15°C

    311 mm rain

Climate comfort score

A 0–100 composite of temperature balance, rainfall, sunshine, seasonality, and winter/summer extremes; higher means more comfortable. Used consistently across the platform.

Climate comfort score

Busan has a climate comfort score of 78/100, a very comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

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