Climate and Weather of Jeju Island, South Korea

In South Korea you have several regions, one of which is called Jeju Island. The most popular city in this region is Jeju, whose climate data we'll examine to provide you with an overview of what weather to expect in Jeju Island. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

In Jeju Island, during the months of May, June, September and October you can expect comfortable weather, with average temperatures ranging from 20°C to 26°C.

The warmest weather in Jeju Island arrives in August, when temperatures climb to 29°C. In contrast, January sees the mercury drop to daytime highs of 9°C.

The colder period typically falls in the months of January and February.

When it comes to rainfall, Jeju Island sees significant variations throughout the year. June tends to be the wettest, receiving 202 mm of rain, while November is much drier with just 73 mm.

May is the sunniest period, with ideal conditions for exploring the region and all it has to offer.

Select a Month of Interest

Check the conditions for any month of the year.

Interested in the detailed Weather and Climate of Jeju Island, South Korea?

Please select a city below the map you wish to travel to, or the one closest to your destination. Each selected city will show you the following graphs:
1. Average minimum and maximum temperature over the year
2. Average monthly precipitation over the year (rainfall, snow)
3. Average monthly hours of sunshine over the year
On certain pages we also offer other historical climate data like humidity wind speed and water temperature.