Jeju
7 to 28°C
temperature
2518 hours
sunshine per day
748 mm
rain
209 days
dry
146 days
rain
10 days
snow

Climate of Jeju

Jeju has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Jeju is 17° degrees and there is about 749 mm of rain in a year. It is dry for 178 days a year with an average humidity of 74% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 7°C and 28°C
  • Night:the average nighttime temperature is between 4°C and 25°C
  • Sea temperature: the sea temperature is between 14°C and 28°C
  • Rain: it rains 146 days and there is a total of approximately 748 mm rainfall
  • Snow: it snows an average of 10 days per year
  • Sun hours: throughout the year there are 2518 sun hours
Maximum temperature: between 7°C and 28°C
Warmest month: 28°C in August
Coldest month: 7°C in January
Night temperature: between 4°C and 25°C
Sea temperature: between 14°C and 28°C
Dry days: 209 days
Days with rain: 146 days
Days with snow: 10 days
Total rain sum: 748 mm
Hours of sunshine: 2518 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Jeju.

Precipitation graph

This graph shows the average amount of rainfall per month for Jeju.

Climate table of Jeju

In this climate table you can see at a glance what the average weather per month is for Jeju. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Jeju might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 7 8 11 15 19 22 26 28 24 20 15 9
Night temp. (°C) 4 5 8 12 16 20 24 25 22 18 12 6
Water temp. (°C) 15 14 14 15 17 20 26 28 24 21 18 14
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 33 40 47 56 48 73 93 111 72 92 44 39
Days with rain 10 11 12 11 9 13 15 14 13 11 13 14
Days with snow 5 3 - - - - - - - - - 2
Dry days 16 14 19 19 22 17 16 17 17 20 17 15
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 6 7 8 9 8 9 9 7 7 5 4
Wind force (Bft) 4 4 4 4 3 3 3 3 3 4 4 4
UV-index 2 3 3 4 5 5 7 6 5 4 4 2

Best time to visit Jeju

The best time to visit Jeju in South Korea is from May through July and September and October. In this period you have a pleasant temperature and little precipitation. The highest average temperature in Jeju is 28°C in August and the lowest is 7°C in January. The highest water temperature is 28°C and it does not get colder than 14°C.

Climate of Jeju by month

What is the average climate in a given month for Jeju? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Jeju weather experiences

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