Heat Risk in Old Erowal Bay, NSW: 2026 Assessment
Heat Risk Score
6.0/10Old Erowal Bay is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations, such as the elderly and those with pre-existing health conditions.
Key Facts
- Heat Risk
- Old Erowal Bay is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations, such as the elderly and those with pre-existing health conditions.
- Trend
- increasing
- Suburb
- Old Erowal Bay, NSW
- Overall Risk
- High
- Postcode
- 2540
- Highest high-risk exposure
- 24.4% of land (bushfire)
Heat Risk Analysis
Old Erowal Bay in New South Wales 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 Old Erowal Bay 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 region.
Get an address-level heat risk assessment from ClimateNest for Old Erowal Bay including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Old Erowal Bay (postcode 2540) 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 (24.4% of land in high-risk zones), riverine flood (6% of land in high-risk zones), surface flood (5.8% of land in high-risk zones). Exposure is not uniform across Old Erowal Bay — 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 coastal defenses
Near-termInvest in seawalls and other coastal defenses to protect against sea level rise and storm surges.
Est. cost: High
Strengthen bushfire preparedness
ImmediateImplement stricter building codes in bushfire-prone areas and provide residents with resources to prepare for bushfires.
Est. cost: Medium
Develop a heatwave response plan
Near-termCreate a plan to help residents cope with extreme heat, including cooling centers and public awareness campaigns.
Est. cost: Low
Upgrade stormwater drainage
Long-termImprove stormwater drainage systems to reduce the risk of flooding during heavy rainfall events.
Est. cost: High
Community education programs
Near-termEducate the community about climate change risks and adaptation measures.
Est. cost: Low
Council & Emergency Services
Explore Old Erowal Bay Risk Reports
View other climate risk assessments for Old Erowal Bay:
Frequently Asked Questions
How hot does Old Erowal Bay get in summer?
Old Erowal Bay in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Old Erowal Bay. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Old Erowal Bay?
Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for New South Wales. Continued warming is likely through 2050 under all emissions scenarios.
How does heat affect energy costs for Old Erowal Bay 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 Old Erowal Bay and the performance of your building envelope.
What heat mitigation measures work best in Old Erowal Bay?
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 Old Erowal Bay is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 24.4% of Old Erowal Bay in high-risk zones for bushfire, with a further 62.4% 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 Old Erowal Bay Safe from Climate Risk?
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