Perth, Western Australia, Australia Climate Change Severity

38
Moderate
The current climate change severity in Perth is Moderate, with a 17.03% 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)

Perth 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), Perth temperature has changed by around +3.1%, 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
9385
-8.6%
cloudyCloudy
5132
-37.2%
rainyRainy
5836
-37.9%
snowySnowy
00
0%
mistyMisty
00
0%

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

Climate Change Indicators:

Over the past 15 years, Perth has experienced measurable improvements in key climate parameters, contributing to the current severity score of 38 (within the Moderate severity category). This suggests improving climate conditions compared to previous years. Here’s a breakdown of the specific changes observed:

Severity Score

38/100

Moderate

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Perth experienced significant changes:

Temperature change of

+0.6 °C

Variation in annual rainfall

+8.2 %

Change in average humidity

-6.4 %

PM2.5 levels surged by

+7.8 %

Heatwave changed by

+4.7 day(s)

Coldwave changed by

+0.7 day(s)

Wind speeds changed by

-1.2 km/h

These indicators show reduced climate volatility, offering a valuable window to reinforce sustainable practices and strengthen long-term climate resilience. As the severity shifts toward Moderate, it is important to maintain momentum in climate adaptation efforts.

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

Perth Weather Forecast 30 Days (August - September 2025)
Perth, Western Australia, Australia

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Tue. 26, Aug.
moderate rainModerate rain
Temperature Icon14°/9°
Humidity Icon76%
Wind Icon21km/h
Wed. 27, Aug.
moderate rainModerate rain
Temperature Icon14°/8°
Humidity Icon74%
Wind Icon18km/h
Thu. 28, Aug.
partly cloudyPartly Cloudy
Temperature Icon16°/7°
Humidity Icon76%
Wind Icon17km/h
Fri. 29, Aug.
sunnySunny
Temperature Icon15°/7°
Humidity Icon67%
Wind Icon12km/h
Sat. 30, Aug.
sunnySunny
Temperature Icon18°/8°
Humidity Icon64%
Wind Icon12km/h
Sun. 31, Aug.
sunnySunny
Temperature Icon19°/10°
Humidity Icon62%
Wind Icon17km/h
Mon. 1, Sep.
sunnySunny
Temperature Icon19°/10°
Humidity Icon59%
Wind Icon17km/h
Tue. 2, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/14°
Humidity Icon72%
Wind Icon14km/h
Wed. 3, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon19°/14°
Humidity Icon71%
Wind Icon16km/h
Thu. 4, Sep.
sunnySunny
Temperature Icon21°/12°
Humidity Icon73%
Wind Icon15km/h
Fri. 5, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon17°/11°
Humidity Icon74%
Wind Icon27km/h
Sat. 6, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon15°/10°
Humidity Icon67%
Wind Icon26km/h
Sun. 7, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon17°/9°
Humidity Icon73%
Wind Icon18km/h
Mon. 8, Sep.
sunnySunny
Temperature Icon17°/9°
Humidity Icon69%
Wind Icon14km/h
Tue. 9, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/12°
Humidity Icon70%
Wind Icon18km/h
Wed. 10, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/12°
Humidity Icon74%
Wind Icon22km/h
Thu. 11, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/11°
Humidity Icon73%
Wind Icon21km/h
Sat. 13, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/10°
Humidity Icon71%
Wind Icon20km/h
Sun. 14, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon20°/10°
Humidity Icon67%
Wind Icon21km/h
Mon. 15, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon67%
Wind Icon21km/h
Tue. 16, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon68%
Wind Icon23km/h
Wed. 17, Sep.
moderate rain at timesModerate rain at times
Temperature Icon19°/11°
Humidity Icon70%
Wind Icon21km/h
Thu. 18, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/11°
Humidity Icon71%
Wind Icon25km/h
Fri. 19, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon18°/11°
Humidity Icon73%
Wind Icon22km/h
Sat. 20, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon70%
Wind Icon21km/h
Sun. 21, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon68%
Wind Icon25km/h
Mon. 22, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/11°
Humidity Icon63%
Wind Icon21km/h
Tue. 23, Sep.
moderate rain at timesModerate rain at times
Temperature Icon21°/11°
Humidity Icon63%
Wind Icon20km/h
Wed. 24, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon21°/11°
Humidity Icon65%
Wind Icon20km/h
Thu. 25, Sep.
moderate rain at timesModerate rain at times
Temperature Icon20°/11°
Humidity Icon70%
Wind Icon21km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onTue. 23, Sep.

21.2°C

Low will be onThu. 28, Aug.

7.1°C

HumidityHumidity

High will be onTue. 26, Aug.

76%

Low will be onMon. 1, Sep.

59%

Wind SpeedWind Speed

High will be onFri. 5, Sep.

26.6km/h

Low will be onFri. 29, Aug.

11.5km/h

PrecipitationPrecipitation

High will be onWed. 27, Aug.

8.03mm

Low will be onFri. 29, Aug.

0.01mm

Ultraviolet IndexUV

High will be onThu. 4, Sep.

6

Low will be onTue. 26, Aug.

0.8

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