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PROPERTY ANALYTICS

Climate Risk in Wonthaggi, Victoria

Wonthaggi, Victoria· Bass Coast· 3995
Medium Risk
Updated Mar 2026

Wonthaggi faces moderate climate risks, primarily from flooding and coastal hazards. Climate change is expected to increase the intensity of rainfall and sea levels, potentially exacerbating these risks. Residents should prepare for more frequent extreme weather events.

Overall Risk Score

5.2/10
Medium

Confidence: Medium

Hazard Breakdown

Flood
6.0
Bushfire
4.0
Heat
5.0
Coastal
6.0

Detailed Hazard Analysis

heat Risk

5.0/10

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

Primary Drivers

  • ·Rising average temperatures
  • ·Increased frequency of heatwaves
  • ·Urban heat island effect

Projections (RCP8.5)

2030

5.5

2050

6.0

Data source

flood Risk

6.0/10

Wonthaggi faces a moderate risk of flooding, primarily from heavy rainfall events and nearby waterways. Climate change is expected to increase the intensity of rainfall, potentially exacerbating flood risks.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Sea level rise
  • ·Inadequate drainage infrastructure

Projections (RCP8.5)

2030

6.5

2050

7.2

Data source

coastal Risk

6.0/10

Wonthaggi faces a moderate risk from coastal hazards due to its proximity to the coastline. Sea level rise and increased storm surge events pose a threat to coastal infrastructure and communities.

Primary Drivers

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

Projections (RCP8.5)

2030

6.5

2050

7.5

Data source

bushfire Risk

4.0/10

The bushfire risk in Wonthaggi is relatively low compared to other regions in Victoria, but still present due to surrounding vegetation. Drier conditions and higher temperatures could increase the likelihood of bushfires.

Primary Drivers

  • ·Increased temperatures
  • ·Drier conditions
  • ·Vegetation density

Projections (RCP8.5)

2030

4.5

2050

5.0

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase in areas prone to flooding and coastal hazards.

Price Impact

Properties in high-risk areas may experience a decrease in value.

Buyer Checklist

  • 1.Check flood maps and coastal erosion risk assessments.
  • 2.Assess the property's vulnerability to bushfires.
  • 3.Inquire about council plans for climate adaptation.
  • 4.Consider the potential impact of climate change on insurance premiums.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Bass River
Elevation Range
5-30 meters
Flood Zone
Areas near the Bass River are prone to flooding.

Historical flood events have impacted low-lying areas in Wonthaggi, particularly near the Bass River. The council is working to improve drainage infrastructure to mitigate future flood risks.

View council flood map

Bushfire Evidence

Distance to Bushland
500m to nearby bushland reserves
Planning Overlay
Some areas have a bushfire overlay.
Bushfire Prone Area
Yes

While not as high-risk as other regions, Wonthaggi has areas adjacent to bushland that require careful management and resident awareness.

Heat Evidence

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

The number of days exceeding 30°C is projected to increase, posing health risks to vulnerable populations.

Coastal Evidence

Distance to Coast
2 km
Sea Level Rise Exposure
Low-lying coastal areas are vulnerable to sea level rise.
Erosion Risk
Some coastal areas are experiencing erosion.

Historical Climate Events

2011
floodModerate

Heavy rainfall caused flooding in low-lying areas of Wonthaggi, impacting homes and businesses.

Source
2009
heatwaveModerate

A prolonged heatwave affected Wonthaggi, with temperatures exceeding 40°C for several days.

Source
2016
stormMinor

A severe storm brought strong winds and heavy rain to Wonthaggi, causing minor damage to property.

Source
2023
floodModerate

Significant rainfall led to localized flooding, particularly affecting areas near the Bass River.

Source

Climate Outlook to 2050

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

HazardToday20302050
flood6.06.4(+0.4)7.0(+1.0)
bushfire4.04.2(+0.2)4.5(+0.5)
heat5.05.3(+0.3)5.7(+0.7)
coastal6.06.5(+0.5)7.3(+1.3)

Under a moderate emissions scenario, Wonthaggi is projected to experience a slight increase in overall climate risk, with notable increases in flood and coastal hazards.

CSIRO Climate Projections

Adaptation Recommendations

Improve Drainage Infrastructure

Near-term

Upgrade drainage systems to handle increased rainfall and reduce flood risks.

Est. cost: Medium

Learn more

Implement Coastal Protection Measures

Near-term

Construct seawalls and other coastal defenses to protect against sea level rise and storm surges.

Est. cost: High

Learn more

Develop Heat Action Plan

Immediate

Create a plan to protect vulnerable populations during heatwaves, including cooling centers and community outreach programs.

Est. cost: Low

Learn more

Promote Bushfire Preparedness

Long-term

Educate residents about bushfire risks and provide resources for preparing their homes and properties.

Est. cost: Low

Learn more

Enhance Community Awareness

Near-term

Conduct workshops and public awareness campaigns to educate residents about climate change risks and adaptation strategies.

Est. cost: Low

Learn more

About Wonthaggi's Climate Risk Profile

Wonthaggi, located in the Bass Coast region of Victoria, is increasingly vulnerable to the impacts of climate change. The primary risks include flooding from heavy rainfall and rising sea levels, as well as potential bushfire threats from surrounding vegetation. Rising temperatures and more frequent heatwaves also pose a significant concern for the community.

The area's proximity to the coastline makes it particularly susceptible to coastal erosion and storm surges. Sea level rise is projected to worsen these risks, potentially impacting coastal infrastructure and residential areas. Changes in rainfall patterns could lead to more frequent and intense flooding events, affecting homes, businesses, and transportation networks.

While the bushfire risk is relatively lower compared to other parts of Victoria, drier conditions and higher temperatures could increase the likelihood of bushfires in the surrounding areas. It is essential for residents to stay informed and prepared for potential bushfire threats.

Addressing these climate risks requires a combination of mitigation and adaptation strategies. This includes investing in improved drainage infrastructure, implementing coastal protection measures, and promoting sustainable land management practices. Community awareness and preparedness are also crucial for minimizing the impacts of extreme weather events.

Data sources: BOM · CSIRO · EMV · Bass Coast Shire Council

Local Government Resources

Bass Coast Shire Council

Climate StrategyFlood MapsEmergency Services

Frequently Asked Questions

What are the main climate change risks in Wonthaggi?

The main risks include flooding from heavy rainfall and rising sea levels, as well as potential bushfire threats and increasing heatwaves.

How is the council addressing climate change in Wonthaggi?

The Bass Coast Shire Council is developing and implementing climate adaptation strategies, including improving drainage infrastructure and promoting sustainable land management practices.

What can residents do to prepare for climate change impacts?

Residents can take steps to prepare their homes for flooding and bushfires, develop a heat action plan, and stay informed about local climate risks and adaptation strategies.

Where can I find more information about flood risks in Wonthaggi?

You can find flood maps and risk assessments on the Bass Coast Shire Council website.

Are there any community programs to help residents adapt to climate change?

The council and local community groups offer workshops and public awareness campaigns to educate residents about climate change risks and adaptation strategies.

How will sea level rise affect Wonthaggi?

Sea level rise is projected to increase coastal erosion and inundation, potentially impacting infrastructure and property along the Wonthaggi coastline.

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