Heat Risk in South Murwillumbah, NSW: 2026 Assessment
Heat Risk Score
6.8/10South Murwillumbah is projected to experience more frequent and intense heatwaves. This will increase the risk of heatstroke and other heat-related illnesses, particularly for vulnerable populations.
Key Facts
- Heat Risk
- South Murwillumbah is projected to experience more frequent and intense heatwaves. This will increase the risk of heatstroke and other heat-related illnesses, particularly for vulnerable populations.
- Trend
- increasing
- Suburb
- South Murwillumbah, NSW
- Overall Risk
- High
- Postcode
- 2484
- Highest high-risk exposure
- 11.3% of land (bushfire)
Heat Risk Analysis
South Murwillumbah 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 South Murwillumbah 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.
Average maximum temperatures in January are already high, and are projected to increase further, leading to more heat stress events.
Get an address-level heat risk assessment from ClimateNest for South Murwillumbah including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
South Murwillumbah (postcode 2484) 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 (11.3% of land in high-risk zones), surface flood (10.3% of land in high-risk zones), riverine flood (5.6% of land in high-risk zones). Exposure is not uniform across South Murwillumbah — 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 led to increased hospital admissions and strain on infrastructure.
Adaptation & Mitigation Actions
Improve Flood Defenses
ImmediateInvest in flood levees, drainage improvements, and early warning systems to reduce flood risk.
Est. cost: High
Bushfire Preparedness
Near-termImplement vegetation management programs, improve building standards, and develop community evacuation plans.
Est. cost: Medium
Heatwave Action Plan
Near-termDevelop a heatwave action plan with cooling centers, public awareness campaigns, and support for vulnerable populations.
Est. cost: Low
Climate-Resilient Infrastructure
Long-termIncorporate climate change projections into infrastructure planning and design to ensure long-term resilience.
Est. cost: High
Council & Emergency Services
Explore South Murwillumbah Risk Reports
View other climate risk assessments for South Murwillumbah:
Frequently Asked Questions
How hot does South Murwillumbah get in summer?
South Murwillumbah in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near South Murwillumbah. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in South Murwillumbah?
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 South Murwillumbah 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 South Murwillumbah and the performance of your building envelope.
What heat mitigation measures work best in South Murwillumbah?
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 South Murwillumbah is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 11.3% of South Murwillumbah in high-risk zones for bushfire, with a further 68% 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 South Murwillumbah Safe from Climate Risk?
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