📮 Mundijong postcode: 6123

Heat Risk in Mundijong, WA: 2026 Assessment

Mundijong, Western Australia· Serpentine-Jarrahdale· 6123
Mundijong is experiencing more frequent and intense heatwaves. Higher average temperatures pose a risk to vulnerable populations.Updated 18 Mar 2026

Heat Risk Score

5.0/10

Mundijong is experiencing more frequent and intense heatwaves. Higher average temperatures pose a risk to vulnerable populations.

Key Facts

Heat Risk
Mundijong is experiencing more frequent and intense heatwaves. Higher average temperatures pose a risk to vulnerable populations.
Trend
increasing
Suburb
Mundijong, WA
Overall Risk
Medium
Postcode
6123
Highest high-risk exposure
17.4% of land (bushfire)

Heat Risk Analysis

Mundijong in Western Australia faces elevated extreme heat risk. The Bureau of Meteorology (BOM) reports that Australia's average temperature has increased by approximately 1.5 °C since 1910, with the frequency of extreme heat days rising across most regions.

The urban heat island (UHI) effect can make built-up areas of Mundijong warmer than surrounding rural areas, particularly on summer nights. Dark roof materials, limited tree canopy cover, and heat-absorbing surfaces contribute to localised heat stress that varies by property.

The number of days exceeding 35°C is increasing. Heatwave preparedness is essential for vulnerable residents.

Get an address-level heat risk assessment from ClimateNest for Mundijong including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.

Mundijong (postcode 6123) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are bushfire (17.4% of land in high-risk zones), riverine flood (8.2% of land in high-risk zones), surface flood (8% of land in high-risk zones). Exposure is not uniform across Mundijong — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.

Local Hazard Evidence

Avg January Max Temp32.5 °C
Heat Stress Events/Year5
Urban Heat ContextThe number of days exceeding 35°C is increasing. Heatwave preparedness is essential for vulnerable residents.

Historical Events

2019
Moderate

Mundijong experienced a prolonged heatwave with temperatures exceeding 40°C for several days.

Adaptation & Mitigation Actions

Improve Bushfire Preparedness

Immediate

Implement community education programs, maintain firebreaks, and develop bushfire survival plans.

Est. cost: Low

Enhance Flood Mitigation Infrastructure

Near-term

Upgrade drainage systems, construct flood barriers, and implement early warning systems.

Est. cost: Medium

Develop Heatwave Management Plan

Immediate

Establish cooling centers, provide public health advice, and ensure access to water during heatwaves.

Est. cost: Low

Promote Water Conservation

Long-term

Implement water restrictions, encourage water-efficient landscaping, and invest in water recycling technologies.

Est. cost: Medium

Support Community Resilience Building

Near-term

Foster community networks, provide training in emergency response, and promote social cohesion.

Est. cost: Low

Council & Emergency Services

Shire of Serpentine-Jarrahdale
Emergency Services

Data last updated: 18 March 2026

Explore Mundijong Risk Reports

Frequently Asked Questions

How hot does Mundijong get in summer?

Mundijong in Western Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Mundijong. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.

Is extreme heat increasing in Mundijong?

Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for Western Australia. Continued warming is likely through 2050 under all emissions scenarios.

How does heat affect energy costs for Mundijong properties?

Higher temperatures increase cooling demand, which raises electricity costs. ClimateNest provides energy cost projections based on your property's specific exposure to extreme heat days in Mundijong and the performance of your building envelope.

What heat mitigation measures work best in Mundijong?

Effective heat mitigation includes light-coloured roofing (cool roofs), ceiling and wall insulation, double-glazed windows, external shading, cross-ventilation design, and increasing tree canopy around the property. These measures reduce indoor temperatures and cooling costs.

What share of Mundijong is exposed to high bushfire risk?

ClimateNest's hazard overlay maps 17.4% of Mundijong in high-risk zones for bushfire, with a further 65.8% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.

Is Mundijong Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Mundijong, Western Australia, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$69 could save you from

$7.2B
2022 insured disaster losses*
$300B+
climate risk to property by 2050*
30-120%
insurance premium increases in high-risk areas*

*Industry sources: ICA, APRA, RBA

Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections