Jeju Climate by Month
Jeju has a humid subtropical climate with relatively cool and sometimes quite mild winters. However not every winter is the same. Some winters there will be no days below the freezing point and other years you can experience severe frost. That same unpredictability is reflected throughout almost the entire year.
From May to September you will experience the most rain, with rainfall amounts rising in July and August to 300 mm and sometimes more than 400 mm per month. In this period there is also the possibility that Jeju gets hit by a hurricane. The hurricane season runs from June to December in this region.
The graphs below provide an overview of the climate in Jeju (Jeju Island), South Korea. They present long-term patterns and averages of weather conditions over a 30-year period.
Average day and night temperature
The mean minimum and maximum temperatures over the year.
Monthly hours of sunshine
The average monthly total hours of sunshine over the year
Monthly precipitation
The mean monthly precipitation over the year, including rain, snow, hail etc.
Monthly rainy days
The average number of days each month with rain, snow, hail etc.
Average humidity
The mean monthly relative humidity over the year
