Heat Risk in South Wentworthville, NSW: 2026 Assessment
Heat Risk Score
7.0/10South Wentworthville experiences high temperatures during summer, with potential for heatwaves. Urban areas retain heat, leading to higher night-time temperatures and increased heat stress.
Key Facts
- Heat Risk
- South Wentworthville experiences high temperatures during summer, with potential for heatwaves. Urban areas retain heat, leading to higher night-time temperatures and increased heat stress.
- Trend
- increasing
- Suburb
- South Wentworthville, NSW
- Overall Risk
- Medium
- Postcode
- 2145
- Highest high-risk exposure
- 15.5% of land (bushfire)
Heat Risk Analysis
South Wentworthville 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 Wentworthville 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.
The number of days exceeding 35°C is projected to increase in the future.
Get an address-level heat risk assessment from ClimateNest for South Wentworthville including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
South Wentworthville (postcode 2145) 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 (15.5% of land in high-risk zones), riverine flood (10.7% of land in high-risk zones), surface flood (5.2% of land in high-risk zones). Exposure is not uniform across South Wentworthville — 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 resulted in increased hospital admissions due to heat-related illnesses.
Adaptation & Mitigation Actions
Improve stormwater drainage
ImmediateUpgrade stormwater infrastructure to handle increased rainfall and reduce flood risk.
Est. cost: High
Increase green spaces
Near-termPlant more trees and create green spaces to reduce the urban heat island effect and provide shade.
Est. cost: Medium
Develop a heatwave management plan
ImmediateImplement a plan to protect vulnerable residents during heatwaves, including cooling centers and community outreach programs.
Est. cost: Low
Bushfire risk mitigation
Long-termImplement measures to reduce bushfire risk, such as clearing vegetation around properties and creating firebreaks.
Est. cost: Medium
Council & Emergency Services
Explore South Wentworthville Risk Reports
View other climate risk assessments for South Wentworthville:
Frequently Asked Questions
How hot does South Wentworthville get in summer?
South Wentworthville in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near South Wentworthville. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in South Wentworthville?
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 Wentworthville 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 Wentworthville and the performance of your building envelope.
What heat mitigation measures work best in South Wentworthville?
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 Wentworthville is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 15.5% of South Wentworthville in high-risk zones for bushfire, with a further 56.2% 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 Wentworthville Safe from Climate Risk?
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