Heat Risk in Great Mackerel Beach, NSW: 2026 Assessment
Heat Risk Score
7.0/10Great Mackerel Beach is likely to experience more frequent and intense heatwaves, posing a risk to vulnerable populations.
Key Facts
- Heat Risk
- Great Mackerel Beach is likely to experience more frequent and intense heatwaves, posing a risk to vulnerable populations.
- Trend
- increasing
- Suburb
- Great Mackerel Beach, NSW
- Overall Risk
- High
- Postcode
- 2108
- Region
- Regional
- Median property value
- $500,000
- Dominant hazard
- extreme heat (5/10)
- Highest high-risk exposure
- 22% of land (bushfire)
Heat Risk Analysis
Great Mackerel Beach 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 Great Mackerel Beach 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 Great Mackerel Beach including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Climate projections show heat risk in Great Mackerel Beach is tied to the broader Regional 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.
Great Mackerel Beach located in Regional (postcode 2108), is a New South Wales suburb tracked by ClimateNest. The suburb's median property value is $500,000, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Great Mackerel Beach.
Across the six hazard axes ClimateNest models, the dominant climate risk in Great Mackerel Beach is extreme heat (score 5/10), with moderate exposure. Insurance signals for the suburb point to premiums rising moderately (+25% 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 Great Mackerel Beach, 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 Great Mackerel Beach are increasingly made with an address-level climate report in hand.
Local Hazard Evidence
Adaptation & Mitigation Actions
Develop a community bushfire plan
ImmediateCreate a detailed plan outlining evacuation routes, firebreaks, and community responsibilities during bushfire events.
Est. cost: Low
Implement coastal erosion management strategies
Near-termInvest in seawalls, beach nourishment, and other measures to protect coastal properties from erosion.
Est. cost: High
Improve flood resilience of buildings
Near-termElevate homes, install flood barriers, and improve drainage systems to reduce flood damage.
Est. cost: Medium
Establish a heatwave early warning system
ImmediateImplement a system to alert residents of impending heatwaves and provide guidance on staying safe.
Est. cost: Low
Promote water conservation
Long-termEncourage residents to conserve water through rainwater harvesting and efficient irrigation practices.
Est. cost: Low
Council & Emergency Services
Explore Great Mackerel Beach Risk Reports
View other climate risk assessments for Great Mackerel Beach:
Frequently Asked Questions
How hot does Great Mackerel Beach get in summer?
Great Mackerel Beach in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Great Mackerel Beach. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Great Mackerel Beach?
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 Great Mackerel Beach 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 Great Mackerel Beach and the performance of your building envelope.
What heat mitigation measures work best in Great Mackerel Beach?
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 Great Mackerel Beach?
ClimateNest's suburb model rates Great Mackerel Beach's dominant climate risk as extreme heat at 5/10 on a 0–10 index, followed by damaging wind (4/10) and severe storm (4/10). These are suburb-level averages — an address-level report is needed to confirm the risk of a specific property in Great Mackerel Beach.
What share of Great Mackerel Beach is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 22% of Great Mackerel Beach in high-risk zones for bushfire, with a further 67.6% 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 Great Mackerel Beach Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Great Mackerel Beach, New South Wales, covering flood, bushfire, sea level rise and more.
What A$69 could save you from
*Industry sources: ICA, APRA, RBA
Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections