Heat Risk in Duval, NSW: 2026 Assessment
Heat Risk Score
5.0/10Duval experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This poses a risk to vulnerable populations.
Key Facts
- Heat Risk
- Duval experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This poses a risk to vulnerable populations.
- Trend
- increasing
- Suburb
- Duval, NSW
- Overall Risk
- Medium
- Postcode
- 2350
- Region
- Coastal NSW
- Median property value
- $925,000
- Dominant hazard
- extreme heat (5/10)
- Highest high-risk exposure
- 14.8% of land (bushfire)
Heat Risk Analysis
Duval 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 Duval 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 can last for several days, increasing the risk of heatstroke.
Get an address-level heat risk assessment from ClimateNest for Duval including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Climate projections show heat risk in Duval is tied to the broader Coastal NSW climate. The suburb scores 5 on the 0–10 heat index, with the number of days above 35°C expected to grow through 2050 — a factor that affects cooling costs, garden viability and property desirability.
Duval located in Coastal NSW (postcode 2350), is a New South Wales suburb tracked by ClimateNest. The suburb's median property value is $925,000, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Duval.
Across the six hazard axes ClimateNest models, the dominant climate risk in Duval is extreme heat (score 5/10), with moderate exposure. Insurance signals for the suburb point to premiums rising moderately (+30% by 2030). These suburb-level signals help prioritise which properties need the closest look — the actual risk of any single home can only be confirmed with an address-level report.
Whether you are buying, selling or renovating in Duval, extreme heat is the hazard to weigh first. Local council planning controls, state hazard mapping and lender climate policies each reference this kind of suburb-level signal, and property decisions in Duval are increasingly made with an address-level climate report in hand.
Local Hazard Evidence
Historical Events
A prolonged heatwave resulted in increased hospital admissions for heat-related illnesses in the region.
Adaptation & Mitigation Actions
Improve Flood Defenses
Near-termUpgrade drainage systems and implement flood barriers to protect properties from flooding.
Est. cost: Medium
Bushfire Preparedness
ImmediateClear vegetation around properties, develop a bushfire survival plan, and install firebreaks.
Est. cost: Low
Heatwave Management
Near-termProvide cooling centers for vulnerable populations and promote energy-efficient cooling strategies.
Est. cost: Medium
Water Conservation
Long-termImplement water restrictions and promote water-efficient landscaping to conserve water resources during droughts.
Est. cost: Low
Council & Emergency Services
Explore Duval Risk Reports
Frequently Asked Questions
How hot does Duval get in summer?
Duval in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Duval. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Duval?
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 Duval 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 Duval and the performance of your building envelope.
What heat mitigation measures work best in Duval?
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 are the main climate risks in Duval?
ClimateNest's suburb model rates Duval's dominant climate risk as extreme heat at 5/10 on a 0–10 index, followed by damaging wind (5/10) and severe storm (5/10). These are suburb-level averages — an address-level report is needed to confirm the risk of a specific property in Duval.
What share of Duval is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 14.8% of Duval in high-risk zones for bushfire, with a further 63.8% 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 Duval Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Duval, New South Wales, covering flood, bushfire, sea level rise and more.
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