Heat Risk in Rossmoyne, WA: 2026 Assessment
Heat Risk Score
6.5/10Rossmoyne is likely to experience more frequent and intense heatwaves, impacting vulnerable populations and infrastructure.
Key Facts
- Heat Risk
- Rossmoyne is likely to experience more frequent and intense heatwaves, impacting vulnerable populations and infrastructure.
- Trend
- increasing
- Suburb
- Rossmoyne, WA
- Overall Risk
- Medium
- Postcode
- 6148
- Highest high-risk exposure
- 25.6% of land (bushfire)
Heat Risk Analysis
Rossmoyne 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 Rossmoyne 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.
Perth experiences several heatwave events each summer. Vulnerable residents should take precautions during these periods.
Get an address-level heat risk assessment from ClimateNest for Rossmoyne including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Rossmoyne (postcode 6148) 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 (25.6% of land in high-risk zones), surface flood (9.9% of land in high-risk zones), riverine flood (9% of land in high-risk zones). Exposure is not uniform across Rossmoyne — 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
Historical Events
An extended heatwave resulted in record-breaking temperatures and increased demand for emergency services.
Adaptation & Mitigation Actions
Improve Drainage Infrastructure
Near-termUpgrade drainage systems to handle increased rainfall and reduce flood risk.
Est. cost: Medium
Develop a Heatwave Management Plan
ImmediateImplement strategies to protect vulnerable residents during heatwaves, such as cooling centers and public awareness campaigns.
Est. cost: Low
Strengthen Coastal Defenses
Long-termConstruct or reinforce seawalls and other coastal defenses to protect against sea level rise and storm surges.
Est. cost: High
Promote Water Conservation
Near-termEncourage residents to conserve water through rebates and education programs to reduce strain on water resources during droughts.
Est. cost: Low
Bushfire Preparedness Education
Near-termProvide education and resources to residents on how to prepare for and respond to bushfires.
Est. cost: Low
Council & Emergency Services
Explore Rossmoyne Risk Reports
View other climate risk assessments for Rossmoyne:
Frequently Asked Questions
How hot does Rossmoyne get in summer?
Rossmoyne in Western Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Rossmoyne. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Rossmoyne?
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 Rossmoyne 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 Rossmoyne and the performance of your building envelope.
What heat mitigation measures work best in Rossmoyne?
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 Rossmoyne is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 25.6% of Rossmoyne in high-risk zones for bushfire, with a further 47.6% 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 Rossmoyne Safe from Climate Risk?
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