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Climate Risk in Port MacDonnell, SA

Port MacDonnell, South Australia
Medium Risk
Updated Apr 2026

Port MacDonnell faces moderate climate risks, particularly from flooding and coastal hazards. Sea level rise and increasing temperatures are key concerns. 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
5.5
Coastal
6.0

Climate Hazard Breakdown for Port MacDonnell

increasing

Flood

65/100

Port MacDonnell faces a moderate risk of flooding, primarily from heavy rainfall and coastal inundation. The flat coastal terrain and proximity to the ocean increase vulnerability.

Key drivers:

  • ·Sea level rise
  • ·Increased rainfall intensity
stable

Bushfire

30/100

The risk of bushfire in Port MacDonnell is relatively low compared to other regions in South Australia, but still present due to surrounding vegetation.

Key drivers:

  • ·Dry vegetation
  • ·Wind patterns
increasing

Heat

55/100

Port MacDonnell experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected.

Key drivers:

  • ·Global warming
  • ·Urban heat island effect (minimal)
increasing

Coastal

60/100

Port MacDonnell is exposed to coastal risks, including sea level rise, coastal erosion, and storm surges. The low-lying coastal areas are particularly vulnerable.

Key drivers:

  • ·Sea level rise
  • ·Increased storm intensity
stable

Wind

28/100

Moderate wind risk — gusty northerly winds

stable

Storm

24/100

Moderate storm risk — occasional thunderstorms

stable

Social

21/100

Moderate social stability

increasing

Energy

35/100

Moderate energy costs — summer cooling

In-Depth Climate Risk Guides for Port MacDonnell

Should I Buy

Property buying guide with climate risk assessment

Flood Risk

Flood zone mapping, historical events, and projections

Bushfire Risk

BAL assessment, vegetation proximity, and fire history

Climate Safety

Multi-hazard safety assessment to 2050

Storm Risk

Severe weather, hail, and wind risk analysis

Heat Risk

Extreme heat days, urban heat island, and cooling costs

Insurance Costs

Premium estimates and insurance availability

Investment Score

Climate-adjusted property investment analysis

Detailed Hazard Analysis

heat Risk

55/100

Port MacDonnell experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected.

Primary Drivers

  • ·Global warming
  • ·Urban heat island effect (minimal)
  • ·Reduced vegetation cover

Projections (RCP8.5)

2030

6.0

2050

6.8

Data source

flood Risk

65/100

Port MacDonnell faces a moderate risk of flooding, primarily from heavy rainfall and coastal inundation. The flat coastal terrain and proximity to the ocean increase vulnerability.

Primary Drivers

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

Projections (RCP8.5)

2030

7.0

2050

7.8

Data source

coastal Risk

60/100

Port MacDonnell is exposed to coastal risks, including sea level rise, coastal erosion, and storm surges. The low-lying coastal areas are particularly vulnerable.

Primary Drivers

  • ·Sea level rise
  • ·Increased storm intensity
  • ·Erosion

Projections (RCP8.5)

2030

6.5

2050

7.2

Data source

bushfire Risk

30/100

The risk of bushfire in Port MacDonnell is relatively low compared to other regions in South Australia, but still present due to surrounding vegetation.

Primary Drivers

  • ·Dry vegetation
  • ·Wind patterns
  • ·Arson

Projections (RCP4.5)

2030

3.2

2050

3.5

Data source

What This Means for Property Owners

Insurance Outlook

Premiums may increase due to climate risks.

Price Impact

Property values in vulnerable areas may be affected.

Buyer Checklist

  • 1.Check flood maps and coastal erosion risk assessments.
  • 2.Assess the property's vulnerability to bushfire.
  • 3.Consider the potential impact of sea level rise.
  • 4.Inquire about insurance costs and coverage.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Southern Ocean
Elevation Range
0-10 meters
Flood Zone
Coastal inundation zone

Low-lying coastal areas are most vulnerable to flooding.

View council flood map

Bushfire Evidence

Distance to Bushland
Within 5km
Planning Overlay
CFS Bushfire Prone Area Map
Bushfire Prone Area
Yes

Check the CFS website for current fire restrictions and warnings.

Heat Evidence

Avg January Max Temp
25.5°C
Heat Stress Days/Year
2 days

Heatwaves are becoming more frequent and intense.

Coastal Evidence

Distance to Coast
0.5 km
Sea Level Rise Exposure
High
Erosion Risk
Moderate

Historical Climate Events

2011
floodModerate

Heavy rainfall caused localized flooding in Port MacDonnell.

Source
2013
bushfireMinor

A small bushfire occurred near Port MacDonnell, but was quickly contained.

Source
2019
heatwaveModerate

Port MacDonnell experienced a prolonged heatwave with temperatures exceeding 40°C.

Source
2022
coastalMinor

Storm surge caused minor coastal erosion in Port MacDonnell.

Source

Climate Outlook to 2050

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

HazardToday20302050
flood656.9(+0.4)7.5(+1.0)
bushfire303.1(+0.1)3.3(+0.3)
heat555.8(+0.3)6.3(+0.8)
coastal606.4(+0.4)7.2(+1.2)

Under a moderate emissions scenario, Port MacDonnell will experience a slight increase in overall climate risk, with flooding and coastal hazards being the most significant concerns.

CSIRO Climate Projections

Adaptation Recommendations

Upgrade Drainage Infrastructure

Near-term

Improve drainage systems to reduce the risk of flooding from heavy rainfall.

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 a Heatwave Management Plan

Immediate

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

Est. cost: Low

Learn more

Promote Community Awareness

Long-term

Educate residents about climate risks and how to prepare for extreme weather events.

Est. cost: Low

Learn more

Strengthen Building Codes

Long-term

Update building codes to ensure new construction is resilient to climate change impacts.

Est. cost: Medium

Learn more

About Port MacDonnell's Climate Risk Profile

Port MacDonnell, a coastal town in South Australia, is increasingly vulnerable to the impacts of climate change. The primary risks include flooding from heavy rainfall and rising sea levels, as well as coastal erosion and storm surges. While the risk of bushfire is relatively lower, it is still a factor to consider.

The town's low-lying coastal geography makes it particularly susceptible to sea level rise. Projections indicate that coastal inundation will become more frequent and severe in the coming decades, potentially impacting infrastructure and property.

Rising temperatures and more frequent heatwaves also pose a threat to the community's health and well-being. The elderly and other vulnerable populations are especially at risk during extreme heat events.

Addressing these climate risks requires a combination of adaptation and mitigation strategies. This includes investing in improved drainage infrastructure, implementing coastal protection measures, and reducing greenhouse gas emissions. Community awareness and preparedness are also crucial for minimizing the impacts of climate change.

Data sources: BOM · CSIRO · CFS · SA Government

Local Government Resources

District Council of Grant

Climate StrategyFlood MapsEmergency Services

Frequently Asked Questions

What are the main climate change risks in Port MacDonnell?

The main risks are flooding from heavy rainfall and sea level rise, coastal erosion, and heatwaves.

How will sea level rise affect Port MacDonnell?

Sea level rise will increase the frequency and severity of coastal inundation, potentially impacting infrastructure and property.

What can I do to prepare for a heatwave?

Stay hydrated, seek air-conditioned environments, and check on vulnerable neighbors.

Where can I find information about flood risks in Port MacDonnell?

You can find flood maps and risk assessments on the WaterConnect website.

Is my property at risk from bushfire?

Check the CFS website to determine if your property is in a bushfire prone area.

What is the council doing to address climate change?

The District Council of Grant is developing and implementing climate adaptation strategies.

Get your property's risk report

This suburb assessment covers the area. For a precise address-level climate risk report for any specific property in Port MacDonnell, use our analysis tool.

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