Heat Risk in St Georges Basin, SA: 2026 Assessment
Heat Risk Score
5.5/10St Georges Basin experiences hot summers, and the frequency and intensity of heatwaves are projected to increase, posing health risks to vulnerable populations.
Key Facts
- Heat Risk
- St Georges Basin experiences hot summers, and the frequency and intensity of heatwaves are projected to increase, posing health risks to vulnerable populations.
- Trend
- increasing
- Suburb
- St Georges Basin, SA
- Overall Risk
- Medium
- Postcode
- 5064
- Highest high-risk exposure
- 11.4% of land (surface flood)
Heat Risk Analysis
St Georges Basin 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 St Georges Basin 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 suburb experiences several days above 30°C during summer months.
Get an address-level heat risk assessment from ClimateNest for St Georges Basin including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
St Georges Basin (postcode 5064) 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 surface flood (11.4% of land in high-risk zones), bushfire (10.6% of land in high-risk zones), extreme wind (4.1% of land in high-risk zones). Exposure is not uniform across St Georges Basin — 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
Adaptation & Mitigation Actions
Improve drainage infrastructure
Near-termUpgrade drainage systems to better manage increased rainfall and reduce flood risk.
Est. cost: Medium
Implement coastal protection measures
Long-termConstruct seawalls and other coastal defenses to protect against erosion and sea level rise.
Est. cost: High
Develop a heatwave management plan
ImmediateEstablish cooling centers and provide support for vulnerable residents during heatwaves.
Est. cost: Low
Bushfire preparedness programs
Near-termEducate residents on bushfire safety and evacuation procedures, and maintain firebreaks around properties.
Est. cost: Low
Raise awareness of climate risks
ImmediateInform residents about the risks of climate change and how to prepare for extreme weather events.
Est. cost: Low
Council & Emergency Services
Explore St Georges Basin Risk Reports
View other climate risk assessments for St Georges Basin:
Frequently Asked Questions
How hot does St Georges Basin get in summer?
St Georges Basin in South Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near St Georges Basin. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in St Georges Basin?
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 St Georges Basin 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 St Georges Basin and the performance of your building envelope.
What heat mitigation measures work best in St Georges Basin?
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 St Georges Basin is exposed to high surface flood risk?
ClimateNest's hazard overlay maps 11.4% of St Georges Basin in high-risk zones for surface flood, with a further 73.4% 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 St Georges Basin Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for St Georges Basin, South Australia, covering flood, bushfire, sea level rise and more.
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