Heat Risk in Perth, WA: 2026 Assessment
Heat Risk Score
7.0/10Perth experiences high temperatures during summer, with heatwaves becoming more frequent and intense. This poses a significant risk to vulnerable populations, such as the elderly and those with chronic health conditions.
Key Facts
- Heat Risk
- Perth experiences high temperatures during summer, with heatwaves becoming more frequent and intense. This poses a significant risk to vulnerable populations, such as the elderly and those with chronic health conditions.
- Trend
- increasing
- Suburb
- Perth, WA
- Overall Risk
- Medium
- Postcode
- 6000
- Region
- Greater Perth
- Median property value
- $950,000
- Dominant hazard
- extreme heat (7/10)
- Highest high-risk exposure
- 11.5% of land (bushfire)
Heat Risk Analysis
Perth 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 Perth 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.
Get an address-level heat risk assessment from ClimateNest for Perth including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Climate projections show heat risk in Perth is tied to the broader Greater Perth climate. The suburb scores 7 on the 0–10 heat index, with the number of days above 35°C expected to grow through 2050 — a factor that affects cooling costs, garden viability and property desirability.
Perth located in Greater Perth (postcode 6000), is a Western Australia suburb tracked by ClimateNest. The suburb's median property value is $950,000, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Perth.
Across the six hazard axes ClimateNest models, the dominant climate risk in Perth is extreme heat (score 7/10), with elevated exposure. Insurance signals for the suburb point to premiums rising moderately (+25% by 2030). These suburb-level signals help prioritise which properties need the closest look — the actual risk of any single home can only be confirmed with an address-level report.
Whether you are buying, selling or renovating in Perth, extreme heat is the hazard to weigh first. Local council planning controls, state hazard mapping and lender climate policies each reference this kind of suburb-level signal, and property decisions in Perth are increasingly made with an address-level climate report in hand.
Local Hazard Evidence
Historical Events
Perth experienced a prolonged heatwave with record-breaking temperatures.
Adaptation & Mitigation Actions
Improve building energy efficiency
Near-termRetrofit existing buildings with insulation, efficient windows, and solar panels to reduce energy consumption and reliance on air conditioning during heatwaves.
Est. cost: Medium
Expand green infrastructure
Near-termPlant more trees and create green spaces to reduce the urban heat island effect and provide shade and cooling.
Est. cost: Medium
Upgrade drainage infrastructure
Near-termImprove drainage systems to reduce the risk of flooding from heavy rainfall events.
Est. cost: High
Strengthen coastal defenses
Long-termImplement coastal protection measures, such as seawalls and beach nourishment, to protect against sea level rise and coastal erosion.
Est. cost: Very High
Develop community emergency plans
ImmediateCreate community-based emergency plans to prepare for and respond to extreme weather events, such as heatwaves, bushfires, and floods.
Est. cost: Low
Council & Emergency Services
Explore Perth Risk Reports
Frequently Asked Questions
How hot does Perth get in summer?
Perth in Western Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Perth. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Perth?
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 Perth 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 Perth and the performance of your building envelope.
What heat mitigation measures work best in Perth?
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 are the main climate risks in Perth?
ClimateNest's suburb model rates Perth's dominant climate risk as extreme heat at 7/10 on a 0–10 index, followed by bushfire (5/10) and damaging wind (5/10). These are suburb-level averages — an address-level report is needed to confirm the risk of a specific property in Perth.
What share of Perth is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 11.5% of Perth in high-risk zones for bushfire, with a further 62.7% 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 Perth Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Perth, Western Australia, covering flood, bushfire, sea level rise and more.
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*Industry sources: ICA, APRA, RBA
Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections