Heat Risk in Mount Tomah, NSW: 2026 Assessment
Heat Risk Score
5.0/10Mount Tomah experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This poses a risk to vulnerable populations.
Key Facts
- Heat Risk
- Mount Tomah experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This poses a risk to vulnerable populations.
- Trend
- increasing
- Suburb
- Mount Tomah, NSW
- Overall Risk
- Medium
- Postcode
- 2758
- Highest high-risk exposure
- 12.9% of land (riverine flood)
Heat Risk Analysis
Mount Tomah 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 Mount Tomah 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 Mount Tomah including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Mount Tomah (postcode 2758) 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 (12.9% of land in high-risk zones), surface flood (10.5% of land in high-risk zones), bushfire (6.6% of land in high-risk zones). Exposure is not uniform across Mount Tomah — 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
Adaptation & Mitigation Actions
Improve Bushfire Preparedness
ImmediateImplement bushfire mitigation measures, such as clearing vegetation around properties and developing evacuation plans.
Est. cost: Low
Enhance Flood Resilience
Near-termImprove drainage infrastructure and implement flood-resistant building designs.
Est. cost: Medium
Develop Heatwave Management Plan
Near-termEstablish a heatwave management plan to protect vulnerable populations during extreme heat events.
Est. cost: Low
Promote Water Conservation
Long-termImplement water conservation measures to reduce water stress during droughts and heatwaves.
Est. cost: Low
Council & Emergency Services
Explore Mount Tomah Risk Reports
View other climate risk assessments for Mount Tomah:
Frequently Asked Questions
How hot does Mount Tomah get in summer?
Mount Tomah in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Mount Tomah. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Mount Tomah?
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 Mount Tomah 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 Mount Tomah and the performance of your building envelope.
What heat mitigation measures work best in Mount Tomah?
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 Mount Tomah is exposed to high riverine flood risk?
ClimateNest's hazard overlay maps 12.9% of Mount Tomah in high-risk zones for riverine flood, with a further 68.7% 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 Mount Tomah Safe from Climate Risk?
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