Heat Risk in Grange, SA: 2026 Assessment
Heat Risk Score
7.0/10Grange experiences a high risk of heatwaves, particularly during summer. The urban environment and coastal humidity can exacerbate heat stress for vulnerable populations.
Key Facts
- Heat Risk
- Grange experiences a high risk of heatwaves, particularly during summer. The urban environment and coastal humidity can exacerbate heat stress for vulnerable populations.
- Trend
- increasing
- Suburb
- Grange, SA
- Overall Risk
- Medium
- Postcode
- 5022
- Highest high-risk exposure
- 12.8% of land (bushfire)
Heat Risk Analysis
Grange in South 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 Grange 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.
Coastal humidity can increase heat stress during summer heatwaves.
Get an address-level heat risk assessment from ClimateNest for Grange including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Grange (postcode 5022) 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 (12.8% of land in high-risk zones), surface flood (9.7% of land in high-risk zones), riverine flood (2.2% of land in high-risk zones). Exposure is not uniform across Grange — 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
Several days of extreme heat put pressure on local infrastructure and emergency services.
Prolonged heatwave with temperatures exceeding 40°C impacted vulnerable residents.
Adaptation & Mitigation Actions
Improve stormwater drainage
Near-termUpgrade stormwater infrastructure to handle increased rainfall intensity and reduce flood risk.
Est. cost: Medium
Implement heatwave early warning system
ImmediateDevelop a system to alert residents of impending heatwaves and provide guidance on staying safe.
Est. cost: Low
Protect coastal areas from erosion
Long-termImplement coastal protection measures such as seawalls and dune restoration to mitigate erosion.
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
Community education on climate risks
ImmediateConduct workshops and distribute information to raise awareness about climate change impacts and adaptation strategies.
Est. cost: Low
Council & Emergency Services
Explore Grange Risk Reports
View other climate risk assessments for Grange:
Frequently Asked Questions
How hot does Grange get in summer?
Grange in South Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Grange. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Grange?
Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for South Australia. Continued warming is likely through 2050 under all emissions scenarios.
How does heat affect energy costs for Grange 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 Grange and the performance of your building envelope.
What heat mitigation measures work best in Grange?
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 Grange is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 12.8% of Grange in high-risk zones for bushfire, with a further 59.2% 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 Grange Safe from Climate Risk?
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