Climate Risk Profile: Carrum Downs, VIC

Carrum Downs, Victoria· Frankston· 3201
Medium Risk
Updated Mar 2026

Carrum Downs faces moderate climate risks, primarily from flooding, heatwaves, and coastal hazards. The risk scores are projected to increase by 2030 and 2050 under high emissions scenarios. Residents should prepare for more frequent extreme weather events.

Overall Risk Score

52/100
Medium

Confidence: Medium

Hazard Breakdown

Flood
6.5
Bushfire
3.0
Heat
6.0
Coastal
5.0

Climate Hazard Breakdown for Carrum Downs

increasing

Flood

65/100

Carrum Downs faces a moderate risk of flooding, primarily from heavy rainfall and stormwater runoff. The area's flat terrain and drainage infrastructure contribute to this risk.

Key drivers:

  • ·Increased rainfall intensity
  • ·Urban development
stable

Bushfire

30/100

The bushfire risk in Carrum Downs is relatively low due to the urbanized nature of the suburb and limited proximity to dense bushland. However, grassfires can still pose a threat during dry periods.

Key drivers:

  • ·Dry vegetation
  • ·Increased temperatures
increasing

Heat

60/100

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.

Key drivers:

  • ·Rising global temperatures
  • ·Urban heat island effect
increasing

Coastal

50/100

Carrum Downs faces a moderate risk from coastal hazards due to its proximity to Port Phillip Bay. Sea level rise and storm surges could impact low-lying areas.

Key drivers:

  • ·Sea level rise
  • ·Increased storm intensity
stable

Wind

28/100

Moderate wind risk — cold fronts and gusty winds

stable

Storm

32/100

Moderate storm risk — severe thunderstorms

stable

Social

21/100

Moderate social stability

increasing

Energy

35/100

Moderate energy costs — heating and cooling needs

In-Depth Climate Risk Guides for Carrum Downs

Detailed Hazard Analysis

heat Risk

60/100

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.

Primary Drivers

  • ·Rising global temperatures
  • ·Urban heat island effect
  • ·Reduced vegetation cover

Projections (RCP8.5)

2030

6.5

2050

7.0

Data source

flood Risk

65/100

Carrum Downs faces a moderate risk of flooding, primarily from heavy rainfall and stormwater runoff. The area's flat terrain and drainage infrastructure contribute to this risk.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Urban development
  • ·Aging drainage infrastructure

Projections (RCP8.5)

2030

7.0

2050

7.5

Data source

coastal Risk

50/100

Carrum Downs faces a moderate risk from coastal hazards due to its proximity to Port Phillip Bay. Sea level rise and storm surges could impact low-lying areas.

Primary Drivers

  • ·Sea level rise
  • ·Increased storm intensity
  • ·Coastal erosion

Projections (RCP8.5)

2030

5.5

2050

6.0

Data source

bushfire Risk

30/100

The bushfire risk in Carrum Downs is relatively low due to the urbanized nature of the suburb and limited proximity to dense bushland. However, grassfires can still pose a threat during dry periods.

Primary Drivers

  • ·Dry vegetation
  • ·Increased temperatures
  • ·Human activity

Projections (RCP4.5)

2030

3.2

2050

3.5

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase in the future due to increased climate risks.

Price Impact

Properties in flood-prone or coastal areas may experience price impacts.

Buyer Checklist

  • 1.Check flood maps and historical flood data.
  • 2.Assess the property's elevation and drainage.
  • 3.Consider the potential impacts of sea level rise.
  • 4.Inquire about insurance costs and coverage.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Patterson River
Elevation Range
5-15 meters
Flood Zone
Areas near Patterson River and low-lying areas are susceptible to flooding.

Historical flood events have impacted properties near the Patterson River. Council maintains flood maps and provides guidance on flood preparedness.

View council flood map

Bushfire Evidence

Distance to Bushland
5 km to nearest significant bushland
Planning Overlay
No specific bushfire overlay applies to the majority of Carrum Downs.
Bushfire Prone Area
No

While not a high-risk area, residents should still be aware of grassfire risks during dry periods.

Heat Evidence

Avg January Max Temp
26.5°C
Heat Stress Days/Year
3 days

Average January maximum temperature is based on nearby weather station data. Heat stress events are defined as consecutive days above 35°C.

Coastal Evidence

Distance to Coast
3 km
Sea Level Rise Exposure
Low-lying areas near the coast are potentially exposed to sea level rise.
Erosion Risk
Some coastal erosion is present along Port Phillip Bay.

Historical Climate Events

1934
floodModerate

Major flooding event impacted the Frankston area, including parts of Carrum Downs, following heavy rainfall.

Source
1972
stormModerate

Severe storm caused widespread damage in the region, including fallen trees and power outages in Carrum Downs.

Source
2009
heatwaveMajor

The 2009 heatwave resulted in record-breaking temperatures and increased heat-related illnesses in the Melbourne metropolitan area, including Carrum Downs.

Source
2011
floodMinor

Localized flooding occurred in Carrum Downs due to heavy rainfall and inadequate drainage.

Source

Climate Outlook to 2050

Projections based on CSIRO and BOM climate modelling. Scenario: RCP4.5

HazardToday20302050
flood656.9(+0.4)7.3(+0.8)
bushfire303.1(+0.1)3.3(+0.3)
heat606.5(+0.5)7.2(+1.2)
coastal505.2(+0.2)5.6(+0.6)

Under a moderate emissions scenario, Carrum Downs is projected to experience a slight increase in overall climate risk by 2030, with notable increases in flood and heat risks.

CSIRO Climate Projections

Adaptation Recommendations

Improve Drainage Infrastructure

Near-term

Upgrade and expand drainage systems to reduce the risk of flooding from heavy rainfall.

Est. cost: Medium

Learn more

Develop Heatwave Management Plan

Immediate

Implement a heatwave management plan to protect vulnerable populations during extreme heat events.

Est. cost: Low

Learn more

Protect Coastal Areas

Long-term

Implement coastal protection measures to mitigate the impacts of sea level rise and storm surges.

Est. cost: High

Learn more

Community Awareness Programs

Near-term

Conduct community awareness programs to educate residents about climate risks and adaptation measures.

Est. cost: Low

Learn more

About Carrum Downs's Climate Risk Profile

Carrum Downs, located in the southeastern suburbs of Melbourne, is increasingly vulnerable to the impacts of climate change. The suburb's flat terrain and proximity to Port Phillip Bay make it susceptible to flooding from heavy rainfall and rising sea levels. Heatwaves are also becoming more frequent and intense, posing a significant risk to vulnerable populations.

The primary climate risks for Carrum Downs include flooding, heatwaves, and coastal inundation. Increased rainfall intensity and urban development contribute to the flood risk, while rising global temperatures exacerbate heatwave conditions. Sea level rise and storm surges threaten low-lying coastal areas.

Climate projections indicate that these risks will intensify in the coming decades. By 2030 and 2050, Carrum Downs is expected to experience more frequent and severe extreme weather events, including floods, heatwaves, and coastal storms. These changes could have significant impacts on property values, infrastructure, and community well-being.

Adapting to climate change is crucial for Carrum Downs. This includes investing in improved drainage infrastructure, implementing heatwave management plans, and protecting coastal areas from erosion and inundation. Community awareness and preparedness are also essential to minimize the impacts of extreme weather events.

Data sources: BOM · CSIRO · SES Victoria · Frankston City Council

Local Government Resources

Frequently Asked Questions

What are the main climate change risks for Carrum Downs?

The main climate change risks for Carrum Downs are flooding, heatwaves, and coastal hazards due to its location and topography.

How will climate change affect property values in Carrum Downs?

Properties in flood-prone or coastal areas may experience price impacts due to increased climate risks. It's important to consider these factors when buying or selling property.

What is the council doing to address climate change in Carrum Downs?

Frankston City Council is implementing various initiatives to address climate change, including improving drainage infrastructure, developing heatwave management plans, and protecting coastal areas.

How can I prepare for extreme weather events in Carrum Downs?

You can prepare for extreme weather events by staying informed about weather forecasts, having an emergency plan, and taking steps to protect your property.

Where can I find more information about climate change risks in Carrum Downs?

You can find more information about climate change risks in Carrum Downs on the Frankston City Council website, the Victorian State Emergency Service website, and the Bureau of Meteorology website.

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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