Heat Risk in Clarendon, SA: 2026 Assessment
Heat Risk Score
5.0/10Clarendon experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events. This can impact vulnerable populations, infrastructure, and agricultural activities.
Key Facts
- Heat Risk
- Clarendon experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events. This can impact vulnerable populations, infrastructure, and agricultural activities.
- Trend
- increasing
- Suburb
- Clarendon, SA
- Overall Risk
- Medium
- Postcode
- 5157
- Highest high-risk exposure
- 17.1% of land (bushfire)
Heat Risk Analysis
Clarendon 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 Clarendon 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.
Elderly residents and those with chronic health conditions are particularly vulnerable to heat stress.
Get an address-level heat risk assessment from ClimateNest for Clarendon including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Clarendon (postcode 5157) 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 (17.1% of land in high-risk zones), surface flood (5.3% of land in high-risk zones), riverine flood (3.7% of land in high-risk zones). Exposure is not uniform across Clarendon — 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 in South Australia resulted in heat stress and health impacts in Clarendon.
Adaptation & Mitigation Actions
Develop a community bushfire plan
ImmediateCreate a plan that outlines evacuation routes, communication strategies, and property protection measures.
Est. cost: Low
Improve flood management infrastructure
Near-termUpgrade drainage systems and construct flood barriers to protect properties near the Onkaparinga River.
Est. cost: Medium
Implement a heatwave response plan
ImmediateEstablish cooling centers and provide support to vulnerable residents during heatwave events.
Est. cost: Low
Promote water conservation
Long-termEncourage residents to reduce water consumption and implement water-efficient landscaping practices.
Est. cost: Low
Support local farmers in adopting climate-resilient agricultural practices
Near-termProvide resources and training to help farmers adapt to changing weather patterns and reduce their environmental impact.
Est. cost: Medium
Council & Emergency Services
Explore Clarendon Risk Reports
View other climate risk assessments for Clarendon:
Frequently Asked Questions
How hot does Clarendon get in summer?
Clarendon in South Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Clarendon. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Clarendon?
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 Clarendon 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 Clarendon and the performance of your building envelope.
What heat mitigation measures work best in Clarendon?
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 Clarendon is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 17.1% of Clarendon in high-risk zones for bushfire, with a further 68.7% 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 Clarendon Safe from Climate Risk?
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