Chillan, Biobio, Chile Climate Change Severity

43
High
The current climate change severity in Chillan is High, with a 7.8% worsening in the climate score compared to last 15 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Chillan 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), Chillan temperature has changed by around +0.8%, 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
10388
-14.5%
cloudyCloudy
4138
-7.3%
rainyRainy
4728
-40.4%
snowySnowy
00
0%
mistyMisty
03
100%

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

Climate Change Indicators:

Over the past 15 years, Chillan has experienced measurable shifts in key climate parameters, contributing to the current severity score of 43 (within the High severity category). This suggests worsening climate conditions from the previous years. 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, Chillan experienced significant changes:

Temperature change of

+0.1 °C

Variation in annual rainfall

-27.9 %

Change in average humidity

-1.8 %

PM2.5 levels surged by

-33.5 %

Heatwave changed by

-2.6 day(s)

Coldwave changed by

-1.6 day(s)

Wind speeds changed by

+1.5 km/h

These indicators show that Chillan is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.

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

Chillan Weather Forecast 30 Days (August - September 2025)
Chillan, Biobio, Chile

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sun. 10, Aug.
sunnySunny
Temperature Icon15°/5°
Humidity Icon83%
Wind Icon6km/h
Mon. 11, Aug.
partly cloudyPartly Cloudy
Temperature Icon17°/8°
Humidity Icon78%
Wind Icon5km/h
Tue. 12, Aug.
cloudyCloudy
Temperature Icon17°/8°
Humidity Icon86%
Wind Icon16km/h
Wed. 13, Aug.
cloudyCloudy
Temperature Icon17°/5°
Humidity Icon79%
Wind Icon15km/h
Thu. 14, Aug.
partly cloudyPartly Cloudy
Temperature Icon18°/6°
Humidity Icon75%
Wind Icon9km/h
Fri. 15, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon14°/8°
Humidity Icon83%
Wind Icon13km/h
Sat. 16, Aug.
partly cloudyPartly Cloudy
Temperature Icon16°/7°
Humidity Icon81%
Wind Icon8km/h
Sun. 17, Aug.
sunnySunny
Temperature Icon17°/8°
Humidity Icon78%
Wind Icon16km/h
Mon. 18, Aug.
sunnySunny
Temperature Icon16°/5°
Humidity Icon76%
Wind Icon10km/h
Tue. 19, Aug.
partly cloudyPartly Cloudy
Temperature Icon16°/7°
Humidity Icon66%
Wind Icon6km/h
Wed. 20, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon11°/9°
Humidity Icon95%
Wind Icon12km/h
Thu. 21, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon10°/6°
Humidity Icon95%
Wind Icon14km/h
Fri. 22, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon13°/7°
Humidity Icon87%
Wind Icon9km/h
Sat. 23, Aug.
sunnySunny
Temperature Icon14°/4°
Humidity Icon79%
Wind Icon16km/h
Sun. 24, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/5°
Humidity Icon78%
Wind Icon17km/h
Mon. 25, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/5°
Humidity Icon77%
Wind Icon18km/h
Tue. 26, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/5°
Humidity Icon77%
Wind Icon18km/h
Wed. 27, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon78%
Wind Icon16km/h
Thu. 28, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon80%
Wind Icon17km/h
Fri. 29, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon80%
Wind Icon14km/h
Sat. 30, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon81%
Wind Icon14km/h
Sun. 31, Aug.
heavy rain at timesHeavy rain at times
Temperature Icon16°/6°
Humidity Icon76%
Wind Icon15km/h
Mon. 1, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon77%
Wind Icon16km/h
Tue. 2, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/5°
Humidity Icon76%
Wind Icon14km/h
Wed. 3, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/5°
Humidity Icon75%
Wind Icon15km/h
Thu. 4, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/6°
Humidity Icon77%
Wind Icon17km/h
Fri. 5, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon79%
Wind Icon17km/h
Sat. 6, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/6°
Humidity Icon78%
Wind Icon16km/h
Sun. 7, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon77%
Wind Icon14km/h
Mon. 8, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon78%
Wind Icon17km/h
Tue. 9, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/6°
Humidity Icon77%
Wind Icon18km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onThu. 14, Aug.

17.6°C

Low will be onSat. 23, Aug.

4.1°C

HumidityHumidity

High will be onWed. 20, Aug.

95%

Low will be onTue. 19, Aug.

66%

Wind SpeedWind Speed

High will be onMon. 25, Aug.

18.4km/h

Low will be onMon. 11, Aug.

5.4km/h

PrecipitationPrecipitation

High will be onThu. 28, Aug.

13.8mm

Low will be onTue. 19, Aug.

0.02mm

Ultraviolet IndexUV

High will be onThu. 14, Aug.

5

Low will be onFri. 15, Aug.

3

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