Heat Risk in Rennie, NSW: 2026 Assessment
Heat Risk Score
6.0/10Rennie is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations and infrastructure.
Key Facts
- Heat Risk
- Rennie is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations and infrastructure.
- Trend
- increasing
- Suburb
- Rennie, NSW
- Overall Risk
- Medium
- Postcode
- 2646
- Highest high-risk exposure
- 11% of land (riverine flood)
Heat Risk Analysis
Rennie 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 Rennie 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.
Rennie experiences hot summers, with average maximum temperatures in January exceeding 32 degrees Celsius. Heat stress events are becoming more frequent.
Get an address-level heat risk assessment from ClimateNest for Rennie including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Rennie (postcode 2646) 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 riverine flood (11% of land in high-risk zones), surface flood (6.5% of land in high-risk zones), bushfire (5% of land in high-risk zones). Exposure is not uniform across Rennie — 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
Prolonged heatwave conditions in January led to heat stress and health concerns in Rennie.
Adaptation & Mitigation Actions
Upgrade Drainage Infrastructure
Near-termInvest in upgrading drainage systems to handle increased rainfall intensity and reduce the risk of flooding.
Est. cost: Medium
Develop Heatwave Preparedness Plan
ImmediateImplement a heatwave preparedness plan to protect vulnerable populations during extreme heat events.
Est. cost: Low
Bushfire Risk Mitigation
Near-termImplement bushfire risk mitigation measures, such as vegetation management and community education programs.
Est. cost: Medium
Community Awareness Programs
Long-termRaise community awareness about climate change risks and adaptation strategies.
Est. cost: Low
Council & Emergency Services
Explore Rennie Risk Reports
View other climate risk assessments for Rennie:
Frequently Asked Questions
How hot does Rennie get in summer?
Rennie in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Rennie. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Rennie?
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 Rennie 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 Rennie and the performance of your building envelope.
What heat mitigation measures work best in Rennie?
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 Rennie is exposed to high riverine flood risk?
ClimateNest's hazard overlay maps 11% of Rennie in high-risk zones for riverine flood, with a further 59.8% 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 Rennie Safe from Climate Risk?
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