What the mapping shows for Carrum Downs
Part of Carrum Downs is mapped as subject to coastal inundation.
<0.1% of Carrum Downs is mapped as subject to coastal inundation at current sea level
Victorian Coastal Inundation, State of Victoria (DEECA), CC BY 4.0, retrieved 2026-10-21
This is a share of the suburb's land area from a published state dataset, not an assessment of any property. A ClimateNest report scores the individual address across eight hazards, with insurance and value projections to 2050.
Check an address in Carrum Downs →Heat Risk in Carrum Downs, VIC: 2026 Assessment
<0.1% of Carrum Downs is mapped as subject to coastal inundation at current sea level
That figure covers the suburb. Check whether your address is inside it - address-level, sourced, A$49.
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Heat Risk Score
Not assessedCarrum Downs experiences a moderate risk of heatwaves, with increasing average temperatures and more frequent heat stress events expected in the future. Vulnerable populations are at higher risk.
Key Facts
- Heat Risk
- Carrum Downs experiences a moderate risk of heatwaves, with increasing average temperatures and more frequent heat stress events expected in the future. Vulnerable populations are at higher risk.
- Trend
- increasing
- Suburb
- Carrum Downs, VIC
- Overall Risk
- Medium
- Postcode
- 3201
- Region
- Greater Melbourne
- Median property value
- $1.2 million
- Dominant hazard
- extreme heat
Heat Risk Analysis
Carrum Downs in Victoria faces location-specific 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 Carrum Downs 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 January maximum temperature is based on nearby weather station data. Heat stress events are defined as consecutive days above 35°C.
Get an address-level heat risk assessment from ClimateNest for Carrum Downs including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Heat risk in Carrum Downs is tied to the broader Greater Melbourne climate, and the number of days above 35°C is expected to grow through 2050 - a factor that affects cooling costs, garden viability and property desirability.
Carrum Downs located in Greater Melbourne (postcode 3201), is a Victoria suburb tracked by ClimateNest. The suburb's median property value is $1.2 million, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Carrum Downs.
Across the six hazard axes ClimateNest models, the dominant climate risk for Carrum Downs in this type is extreme heat. Insurance signals for the suburb point to premiums rising moderately (+20% by 2030). The actual risk of any single home can only be confirmed with an address-level report.
Whether you are buying, selling or renovating in Carrum Downs, 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 Carrum Downs are increasingly made with an address-level climate report in hand.
Local Hazard Evidence
Historical Events
The 2009 heatwave resulted in record-breaking temperatures and increased heat-related illnesses in the Melbourne metropolitan area, including Carrum Downs.
Adaptation & Mitigation Actions
Improve Drainage Infrastructure
Near-termUpgrade and expand drainage systems to reduce the risk of flooding from heavy rainfall.
Est. cost: Medium
Develop Heatwave Management Plan
ImmediateImplement a heatwave management plan to protect vulnerable populations during extreme heat events.
Est. cost: Low
Protect Coastal Areas
Long-termImplement coastal protection measures to mitigate the impacts of sea level rise and storm surges.
Est. cost: High
Community Awareness Programs
Near-termConduct community awareness programs to educate residents about climate risks and adaptation measures.
Est. cost: Low
Council & Emergency Services
Explore Carrum Downs Risk Reports
View other climate risk assessments for Carrum Downs:
Frequently Asked Questions
How hot does Carrum Downs get in summer?
Carrum Downs in Victoria experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Carrum Downs. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Carrum Downs?
Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for Victoria. Continued warming is likely through 2050 under all emissions scenarios.
How does heat affect energy costs for Carrum Downs 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 Carrum Downs and the performance of your building envelope.
What heat mitigation measures work best in Carrum Downs?
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.
Is Carrum Downs Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Carrum Downs, Victoria, covering flood, bushfire, sea level rise and more.
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*Industry sources: ICA, APRA, RBA
Full report from A$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections