Jeju, Jeju, South Korea Climate Change Severity

43
High
The current climate change severity in Jeju is High, with a -10.9% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Jeju Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Jeju temperature has changed by around +1.9%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
3843
13.1%
cloudyCloudy
5033
-34%
rainyRainy
9190
-1.09%
snowySnowy
12
100%
mistyMisty
00
0%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Jeju has experienced measurable shifts in key climate parameters, contributing to the current severity score of 43 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

43/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Jeju experienced significant changes:

Temperature change of

+0.2 °C

Variation in annual rainfall

-7.7 %

Change in average humidity

-5.7 %

PM2.5 levels surged by

-10.1 %

Heatwave changed by

+5.4 day(s)

Coldwave changed by

-6.9 day(s)

Wind speeds changed by

+2.1 km/h

These indicators show improvement in key parametes of climate, but Jeju remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

Check how we calculate Climate Change Severity
Based on data from Jan. to Jul.

Jeju Weather Forecast 30 Days (August - September 2025)
Jeju, Jeju, South Korea

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Thu. 14, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon31°/25°
Humidity Icon82%
Wind Icon11km/h
Fri. 15, Aug.
sunnySunny
Temperature Icon30°/25°
Humidity Icon81%
Wind Icon13km/h
Sat. 16, Aug.
sunnySunny
Temperature Icon30°/24°
Humidity Icon75%
Wind Icon11km/h
Sun. 17, Aug.
sunnySunny
Temperature Icon30°/25°
Humidity Icon77%
Wind Icon13km/h
Mon. 18, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/25°
Humidity Icon79%
Wind Icon9km/h
Tue. 19, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/25°
Humidity Icon81%
Wind Icon10km/h
Wed. 20, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon30°/25°
Humidity Icon80%
Wind Icon16km/h
Thu. 21, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/24°
Humidity Icon85%
Wind Icon31km/h
Fri. 22, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/24°
Humidity Icon85%
Wind Icon44km/h
Sat. 23, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/25°
Humidity Icon81%
Wind Icon41km/h
Sun. 24, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/26°
Humidity Icon79%
Wind Icon28km/h
Mon. 25, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/24°
Humidity Icon83%
Wind Icon14km/h
Tue. 26, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/22°
Humidity Icon74%
Wind Icon10km/h
Wed. 27, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon28°/24°
Humidity Icon79%
Wind Icon7km/h
Thu. 28, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/24°
Humidity Icon78%
Wind Icon7km/h
Fri. 29, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/24°
Humidity Icon80%
Wind Icon19km/h
Sat. 30, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/24°
Humidity Icon78%
Wind Icon22km/h
Sun. 31, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/23°
Humidity Icon76%
Wind Icon21km/h
Mon. 1, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/23°
Humidity Icon79%
Wind Icon25km/h
Tue. 2, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/23°
Humidity Icon82%
Wind Icon27km/h
Wed. 3, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/23°
Humidity Icon82%
Wind Icon24km/h
Thu. 4, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/23°
Humidity Icon79%
Wind Icon20km/h
Fri. 5, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/23°
Humidity Icon79%
Wind Icon22km/h
Sat. 6, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/23°
Humidity Icon79%
Wind Icon26km/h
Sun. 7, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/22°
Humidity Icon79%
Wind Icon26km/h
Mon. 8, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/22°
Humidity Icon74%
Wind Icon19km/h
Tue. 9, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/22°
Humidity Icon75%
Wind Icon16km/h
Wed. 10, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/22°
Humidity Icon76%
Wind Icon17km/h
Thu. 11, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/23°
Humidity Icon80%
Wind Icon19km/h
Sat. 13, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/22°
Humidity Icon78%
Wind Icon21km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onThu. 14, Aug.

30.7°C

Low will be onSun. 7, Sep.

21.9°C

HumidityHumidity

High will be onThu. 21, Aug.

85%

Low will be onTue. 26, Aug.

74%

Wind SpeedWind Speed

High will be onFri. 22, Aug.

43.6km/h

Low will be onWed. 27, Aug.

6.8km/h

PrecipitationPrecipitation

High will be onTue. 2, Sep.

37.1mm

Low will be onSat. 16, Aug.

0.03mm

Ultraviolet IndexUV

High will be onTue. 19, Aug.

6

Low will be onThu. 14, Aug.

2.3

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