Heat Risk in Modbury, SA: 2026 Assessment
Heat Risk Score
7.0/10Modbury is expected to experience more frequent and intense heatwaves. This poses a significant risk to vulnerable populations, including the elderly and those with pre-existing health conditions.
Key Facts
- Heat Risk
- Modbury is expected to experience more frequent and intense heatwaves. This poses a significant risk to vulnerable populations, including the elderly and those with pre-existing health conditions.
- Trend
- increasing
- Suburb
- Modbury, SA
- Overall Risk
- Medium
- Postcode
- 5092
- Highest high-risk exposure
- 12% of land (bushfire)
Heat Risk Analysis
Modbury 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 Modbury 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.
Heatwaves are becoming more frequent and intense in the Adelaide region.
Get an address-level heat risk assessment from ClimateNest for Modbury including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Modbury (postcode 5092) 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% of land in high-risk zones), surface flood (6.8% of land in high-risk zones), riverine flood (5.6% of land in high-risk zones). Exposure is not uniform across Modbury — 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
A prolonged heatwave affected Adelaide and surrounding suburbs, including Modbury, causing heat stress and health concerns.
Adaptation & Mitigation Actions
Improve drainage infrastructure
Near-termUpgrade and maintain local drainage systems to handle increased rainfall intensity and reduce flood risk.
Est. cost: Medium
Implement heatwave early warning systems
ImmediateDevelop and implement heatwave early warning systems to alert vulnerable populations and provide guidance on protective measures.
Est. cost: Low
Promote energy efficiency and cool roofs
Near-termEncourage the adoption of energy-efficient building designs and cool roof technologies to reduce the urban heat island effect and lower energy consumption.
Est. cost: Medium
Community education on emergency preparedness
Long-termProvide community education programs on how to prepare for and respond to heatwaves, floods, and other climate-related hazards.
Est. cost: Low
Council & Emergency Services
Explore Modbury Risk Reports
View other climate risk assessments for Modbury:
Frequently Asked Questions
How hot does Modbury get in summer?
Modbury in South Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Modbury. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Modbury?
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 Modbury 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 Modbury and the performance of your building envelope.
What heat mitigation measures work best in Modbury?
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 Modbury is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 12% of Modbury in high-risk zones for bushfire, with a further 66.6% 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 Modbury Safe from Climate Risk?
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