Heat Risk in Ournie, NSW: 2026 Assessment
Heat Risk Score
5.0/10Ournie is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations, including the elderly and those with pre-existing health conditions.
Key Facts
- Heat Risk
- Ournie is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations, including the elderly and those with pre-existing health conditions.
- Trend
- increasing
- Suburb
- Ournie, NSW
- Overall Risk
- Medium
- Postcode
- 2640
- Highest high-risk exposure
- 18.2% of land (bushfire)
Heat Risk Analysis
Ournie 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 Ournie 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 typically occur in January and February, with temperatures exceeding 35°C for several consecutive days.
Get an address-level heat risk assessment from ClimateNest for Ournie including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Ournie (postcode 2640) 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 (18.2% of land in high-risk zones), riverine flood (10.1% of land in high-risk zones), surface flood (9.3% of land in high-risk zones). Exposure is not uniform across Ournie — 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 January resulted in high temperatures and increased demand for cooling.
Adaptation & Mitigation Actions
Improve Flood Defenses
Near-termInvest in infrastructure to mitigate flood risks, such as levees and improved drainage systems.
Est. cost: High
Bushfire Preparedness
ImmediateImplement community education programs and improve bushfire management practices.
Est. cost: Medium
Heatwave Action Plan
Near-termDevelop a heatwave action plan to protect vulnerable populations during extreme heat events.
Est. cost: Low
Water Conservation
Long-termPromote water conservation measures to address potential water scarcity due to climate change.
Est. cost: Low
Council & Emergency Services
Explore Ournie Risk Reports
View other climate risk assessments for Ournie:
Frequently Asked Questions
How hot does Ournie get in summer?
Ournie in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Ournie. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Ournie?
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 Ournie 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 Ournie and the performance of your building envelope.
What heat mitigation measures work best in Ournie?
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 Ournie is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 18.2% of Ournie in high-risk zones for bushfire, with a further 65% 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 Ournie Safe from Climate Risk?
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