Heat Risk in Ermington, NSW: 2026 Assessment
Heat Risk Score
6.0/10Ermington is likely to experience more frequent and intense heatwaves due to climate change. This poses a risk to vulnerable populations, such as the elderly and those with chronic health conditions.
Key Facts
- Heat Risk
- Ermington is likely to experience more frequent and intense heatwaves due to climate change. This poses a risk to vulnerable populations, such as the elderly and those with chronic health conditions.
- Trend
- increasing
- Suburb
- Ermington, NSW
- Overall Risk
- Medium
- Postcode
- 2115
- Region
- Greater Sydney
- Median property value
- $1.6 million
- Dominant hazard
- extreme heat (5/10)
- Highest high-risk exposure
- 12.5% of land (riverine flood)
Heat Risk Analysis
Ermington 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 Ermington 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 urban environment of Ermington contributes to the urban heat island effect, increasing temperatures during heatwaves.
Get an address-level heat risk assessment from ClimateNest for Ermington including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Climate projections show heat risk in Ermington is tied to the broader Greater Sydney climate. The suburb scores 5 on the 0–10 heat index, with the number of days above 35°C expected to grow through 2050 — a factor that affects cooling costs, garden viability and property desirability.
Ermington located in Greater Sydney (postcode 2115), is a New South Wales suburb tracked by ClimateNest. The suburb's median property value is $1.6 million, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Ermington.
Across the six hazard axes ClimateNest models, the dominant climate risk in Ermington is extreme heat (score 5/10), with moderate exposure. Insurance signals for the suburb point to premiums rising moderately (+20% by 2030). These suburb-level signals help prioritise which properties need the closest look — the actual risk of any single home can only be confirmed with an address-level report.
Whether you are buying, selling or renovating in Ermington, extreme heat is the hazard to weigh first. Local council planning controls, state hazard mapping and lender climate policies each reference this kind of suburb-level signal, and property decisions in Ermington are increasingly made with an address-level climate report in hand.
Local Hazard Evidence
Historical Events
A prolonged heatwave affected Sydney, with temperatures exceeding 40 degrees Celsius in Ermington.
Adaptation & Mitigation Actions
Improve Drainage Infrastructure
Near-termUpgrade drainage systems to handle increased rainfall intensity and reduce flood risk.
Est. cost: High
Develop a Heatwave Management Plan
ImmediateImplement a plan to protect vulnerable populations during heatwaves, including cooling centers and community outreach programs.
Est. cost: Medium
Increase Green Space
Long-termPlant more trees and create green spaces to reduce the urban heat island effect and improve air quality.
Est. cost: Medium
Raise Community Awareness
ImmediateEducate residents about climate risks and how to prepare for extreme weather events.
Est. cost: Low
Council & Emergency Services
Explore Ermington Risk Reports
View other climate risk assessments for Ermington:
Frequently Asked Questions
How hot does Ermington get in summer?
Ermington in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Ermington. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Ermington?
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 Ermington 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 Ermington and the performance of your building envelope.
What heat mitigation measures work best in Ermington?
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 are the main climate risks in Ermington?
ClimateNest's suburb model rates Ermington's dominant climate risk as extreme heat at 5/10 on a 0–10 index, followed by damaging wind (4/10) and severe storm (4/10). These are suburb-level averages — an address-level report is needed to confirm the risk of a specific property in Ermington.
What share of Ermington is exposed to high riverine flood risk?
ClimateNest's hazard overlay maps 12.5% of Ermington in high-risk zones for riverine flood, with a further 70.3% 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 Ermington Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Ermington, New South Wales, covering flood, bushfire, sea level rise and more.
What A$69 could save you from
*Industry sources: ICA, APRA, RBA
Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections