Heat Risk in Port Broughton, SA: 2026 Assessment
Heat Risk Score
7.0/10Port Broughton is experiencing an increase in the frequency and intensity of heatwaves. This poses a significant risk to vulnerable populations, such as the elderly and those with chronic health conditions.
Key Facts
- Heat Risk
- Port Broughton is experiencing an increase in the frequency and intensity of heatwaves. This poses a significant risk to vulnerable populations, such as the elderly and those with chronic health conditions.
- Trend
- increasing
- Suburb
- Port Broughton, SA
- Overall Risk
- Medium
- Postcode
- 5522
- Highest high-risk exposure
- 16% of land (bushfire)
Heat Risk Analysis
Port Broughton 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 Port Broughton 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 average maximum temperature in January is increasing, leading to more frequent and intense heat stress events. This can impact human health and infrastructure.
Get an address-level heat risk assessment from ClimateNest for Port Broughton including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Port Broughton (postcode 5522) 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 (16% of land in high-risk zones), surface flood (6.8% of land in high-risk zones), extreme wind (5% of land in high-risk zones). Exposure is not uniform across Port Broughton — 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 resulted in heat stress and health concerns for vulnerable residents.
Adaptation & Mitigation Actions
Upgrade stormwater drainage infrastructure
Near-termImprove the capacity of stormwater drains to handle increased rainfall intensity and reduce the risk of flooding.
Est. cost: Medium
Implement coastal protection measures
Near-termConstruct seawalls and other coastal defenses to protect against sea level rise and coastal erosion.
Est. cost: High
Develop a heatwave management plan
ImmediateEstablish cooling centers and provide support for vulnerable residents during heatwaves.
Est. cost: Low
Raise awareness about climate risks
Long-termEducate residents about the impacts of climate change and how to prepare for extreme weather events.
Est. cost: Low
Council & Emergency Services
Explore Port Broughton Risk Reports
View other climate risk assessments for Port Broughton:
Frequently Asked Questions
How hot does Port Broughton get in summer?
Port Broughton in South Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Port Broughton. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Port Broughton?
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 Port Broughton 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 Port Broughton and the performance of your building envelope.
What heat mitigation measures work best in Port Broughton?
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 Port Broughton is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 16% of Port Broughton in high-risk zones for bushfire, with a further 66% 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 Port Broughton Safe from Climate Risk?
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