August weather forecast
South Korea

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Weather in August

August in South Korea continues the summer trend, with high temperatures and considerable humidity. In Seoul, temperatures range from 22°C (71.6°F) to 30°C (86°F), while the coastal city of Busan experiences a slightly milder climate with temperatures from 24°C (75.2°F) to 30°C (86°F).

Rainfall begins to decrease in August as the monsoon season or "jangma" comes to an end. The country experiences an average rainfall of about 350mm (13.78"), with the majority of the precipitation occurring in the first half of the month. The latter part of August typically sees less rainfall and more clear, sunny days, indicating the approaching end of summer.

Compared to July, August maintains similar temperature levels but sees a decrease in rainfall, particularly towards the end of the month. The weather remains humid but becomes more manageable as the intensity of the monsoon season subsides. As South Korea transitions into September, temperatures begin to cool, humidity levels decrease, and the country starts to welcome the onset of the pleasant autumn season.

  • Seoul - August »
    In Seoul in August, it is raining for 14.6 days, with typically 364mm (14.33") of accumulated precipitation. The average relative humidity in August is 75.6%.
  • Busan - August »
    The month with the warmest seawater in Busan, South Korea, is August, with an average sea temperature of 26.3°C (79.3°F). August is the month when Busan experiences its warmest temperatures, averaging a high of 27.9°C (82.2°F) and a low of 24.7°C (76.5°F).
  • Incheon - August »
    The month with the warmest seawater in Incheon, South Korea, is August, with an average sea temperature of 23.4°C (74.1°F). The month with the warmest seawater in Incheon is August, with an average sea temperature of 23.4°C (74.1°F).
  • Daegu - August »
    In Daegu in August, it is raining for 16 days, with typically 105mm (4.13") of accumulated precipitation. August stands as the hottest month for Daegu, with temperatures occasionally crossing the boiling 30°C (86°F) mark.
  • Daejeon - August »
    In August, the average relative humidity in Daejeon, South Korea, is 84%. Daejeon experiences its highest temperatures in August, with an average peak of 28.9°C (84°F) and a low of 20.1°C (68.2°F).
  • Gwangju - August »
    August, with an average high of 29.8°C (85.6°F) and a low of 21.8°C (71.2°F), signifies the warmest month of the year in Gwangju, South Korea. In Gwangju, South Korea, the average relative humidity in August is 81%.
  • Ulsan - August »
    Ulsan, South Korea, reaches its average highest temperatures in August, measuring 28°C (82.4°F) at the peak and 23.3°C (73.9°F) at the lowest. August is the month with the warmest seawater in Ulsan, with an average sea temperature of 25.6°C (78.1°F).
  • Suwon - August »
    August, noted for its average high-temperature of 29.8°C (85.6°F) and an average low-temperature of 22.1°C (71.8°F), is considered the warmest month in Suwon, South Korea. In Suwon during August, the rain falls for 14.1 days and regularly aggregates up to 300mm (11.81") of precipitation.
  • Goyang - August »
    August is the month with the warmest seawater in Goyang, with an average sea temperature of 23.3°C (73.9°F). With an average sea temperature of 23.3°C (73.9°F), August is the month with the warmest seawater in Goyang.
  • Gumi - August »
    The sweltering heat of the summer continues to persist throughout August in Gumi, with a slight increase in temperature to an average of 30.4°C (86.7°F). In August, the average heat index, which takes the relative humidity and factors it into the air temperature reading, is calculated to be 38°C (100.4°F).
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