June weather forecast
South Korea

June in South Korea represents the start of the summer season, marked by rising temperatures and the beginning of the monsoon season. In Seoul, the average temperatures range from 18°C (64.4°F) to 27°C (80.6°F), while Busan experiences slightly milder conditions, with average temperatures from 18°C (64.4°F) to 26°C (78.8°F).

Rainfall increases dramatically in June, as the "jangma" or rainy season commences towards the end of the month. Average rainfall can reach 130mm (5.12"), with most of it concentrated in the latter half of the month. During this period, the country can experience periods of sustained rainfall, often accompanied by thunderstorms.

Compared to May, June is noticeably warmer and significantly wetter, especially in its final weeks. The increased heat and humidity, coupled with the onset of the rainy season, mark a definitive shift from the pleasant spring weather to the intensity of the Korean summer. The weather continues to heat up in July, the peak of the summer season, which is also the wettest month of the year due to the full onset of the monsoon.

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• Seoul - June »
  On the last day of June, in Seoul sunrise is at 05:14 and sunset at 19:57 KST. In June, in Seoul the rain falls for 9.9 days.
• Busan - June »
  In Busan during June, the rain falls for 9.2 days and regularly aggregates up to 72mm (2.83") of precipitation. With an average of 14h and 30min of daylight, June has the longest days of the year in Busan, South Korea.
• Incheon - June »
  The month with the longest days in Incheon is June, with an average of 14h and 42min of daylight. In June, in Incheon the rain falls for 9.7 days.
• Daegu - June »
  The month with the longest days in Daegu is June, with an average of 14h and 36min of daylight. On the first day of June in Daegu sunrise is at 05:10 and sunset at 19:36.
• Daejeon - June »
  June has the longest days of the year in Daejeon, with an average of 14h and 36min of daylight. June and July, with an average maximum UV index of 6, are months with the highest UV index in Daejeon, South Korea.
• Gwangju - June »
  The month with the longest days in Gwangju is June, with an average of 14h and 30min of daylight. In Gwangju, in June, during 10.3 rainfall days, 54mm (2.13") of precipitation is typically accumulated.
• Ulsan - June »
  In Ulsan, in June, it is raining for 13.1 days, with typically 97mm (3.82") of accumulated precipitation. In Ulsan, in June, it is raining for 13.1 days, with typically 97mm (3.82") of accumulated precipitation.
• Suwon - June »
  In Suwon in June, during 9.4 rainfall days, 129mm (5.08") of precipitation is typically accumulated. On the first day of June in Suwon sunrise is at 05:12 and sunset at 19:46.
• Goyang - June »
  With an average of 14h and 42min of daylight, June has the longest days of the year in Goyang, South Korea. In Goyang, the average seawater temperature in June is 18.7°C (65.7°F).
• Gumi - June »
  In Gumi during June, the rain falls for 8.8 days and regularly aggregates up to 130mm (5.12") of precipitation. On the first day of June in Gumi, South Korea, sunrise is at 05:10 and sunset at 19:38.