📮 Tahmoor postcode: 2573

Heat Risk in Tahmoor, NSW: 2026 Assessment

Tahmoor, New South Wales· Wollondilly· 2573
Tahmoor experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This can impact vulnerable populations and infrastructure.Updated 31 Mar 2026

Heat Risk Score

4.0/10

Tahmoor experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This can impact vulnerable populations and infrastructure.

Key Facts

Heat Risk
Tahmoor experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This can impact vulnerable populations and infrastructure.
Trend
increasing
Suburb
Tahmoor, NSW
Overall Risk
Medium
Postcode
2573
Highest high-risk exposure
11.5% of land (surface flood)

Heat Risk Analysis

Tahmoor 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 Tahmoor 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 increasing. Heatwaves can pose a risk to vulnerable populations.

Get an address-level heat risk assessment from ClimateNest for Tahmoor including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.

Tahmoor (postcode 2573) 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 surface flood (11.5% of land in high-risk zones), bushfire (10% of land in high-risk zones), riverine flood (7.9% of land in high-risk zones). Exposure is not uniform across Tahmoor — 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

Avg January Max Temp30.5 °C
Heat Stress Events/Year3
Urban Heat ContextAverage maximum temperatures in January are increasing. Heatwaves can pose a risk to vulnerable populations.

Adaptation & Mitigation Actions

Improve Flood Defenses

Near-term

Invest in infrastructure to mitigate flood risk, such as improved drainage systems and flood barriers.

Est. cost: High

Enhance Bushfire Preparedness

Immediate

Implement community education programs and improve bushfire management practices to reduce bushfire risk.

Est. cost: Medium

Develop Heat Action Plan

Near-term

Create a heat action plan to protect vulnerable populations during heatwaves, including cooling centers and public awareness campaigns.

Est. cost: Low

Promote Water Conservation

Long-term

Encourage water conservation measures to reduce water stress during periods of drought.

Est. cost: Low

Council & Emergency Services

Wollondilly Shire Council
Emergency Services

Data last updated: 31 March 2026

Explore Tahmoor Risk Reports

Frequently Asked Questions

How hot does Tahmoor get in summer?

Tahmoor in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Tahmoor. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.

Is extreme heat increasing in Tahmoor?

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 Tahmoor 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 Tahmoor and the performance of your building envelope.

What heat mitigation measures work best in Tahmoor?

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 Tahmoor is exposed to high surface flood risk?

ClimateNest's hazard overlay maps 11.5% of Tahmoor in high-risk zones for surface flood, with a further 61.4% 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 Tahmoor Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Tahmoor, New South Wales, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$69 could save you from

$7.2B
2022 insured disaster losses*
$300B+
climate risk to property by 2050*
30-120%
insurance premium increases in high-risk areas*

*Industry sources: ICA, APRA, RBA

Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections