Weather in Jeju in October 2025
Average weather
Average temperature in Jeju in October
Going from a maximum of +23°C during the day to a minimum of +14°C during the night, the temperature in October averages around +21°C.
The average maximum temperature goes down 22% by the end of the month, compared with the beginning of the month, from +23°C to +21°C.
Is Jeju warm or cold in October?
Jeju is typically mild in October.
Maximum temperatures go down compared to the previous month from +25°C to +21°C. The minimum temperature also goes down from +21°C to +16°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in Jeju:
Climate in Jeju in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +25°C | +21°C | +15°C | ||||
| Min. temperature | ||||||
| +14°C | +7°C | +2°C | ||||
| Max. temperature | ||||||
| +32°C | +29°C | +25°C | ||||
| Rainfall | ||||||
| 166 mm | 79 mm | 78 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 77% | 69% | 67% | ||||
| Air pressure | ||||||
| 1012 HPa | 1018 HPa | 1021 HPa | ||||
| Sunny days | ||||||
| 4 | 7 | 5 | ||||
| Cloudy days | ||||||
| 8 | 11 | 10 | ||||
| Rainy days | ||||||
| 18 | 12 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
October often has better weather than September. It’s getting colder in October. From +25°C in the day, the average maximum temperature lowers to +21°C. As October arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 166 mm to 79 mm. It feels drier, as humidity decreases from 77% to 69%. The average wind speed doesn’t change much during October, staying around 3 m/s. The good news is there are likely to be more sunny days in October, from 4 to 7.
Next month (November) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Jeju is gradually increasing during October, going from 3 m/s to 3 m/s over the course of the month.
Rain
How was the weather last October in Jeju?
Climate Change over Years
The climate in Jeju in October has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+17°C) and the highest in 2024 (+19°C). The driest year was 2005 with only 752 mm of rainfall, and the wettest year was 1985 with 1808 mm.
FAQ
Is October a good time to visit Jeju?
Can you sunbathe in Jeju in October?
Is Jeju rainy in October?
Is it sunny in Jeju in October?
Other cities in South Korea
Monthly weather in Jeju
Source of the data
For this page, we’ve looked at the typical weather in Jeju, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
