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Climate Risk Profile: Penneshaw, SA

Penneshaw, South Australia
Medium Risk
Updated Apr 2026

Penneshaw faces a medium overall climate risk, with coastal and bushfire risks being the most significant. Rising sea levels and increasing temperatures are key drivers of these risks. Residents should prepare for more frequent extreme weather events.

Overall Risk Score

55/100
Medium

Confidence: Medium

Hazard Breakdown

Flood
4.0
Bushfire
6.0
Heat
5.0
Coastal
7.0

Climate Hazard Breakdown for Penneshaw

increasing

Flood

40/100

Penneshaw faces a moderate risk of flooding, primarily from heavy rainfall events and potential coastal inundation. The risk is influenced by its coastal location and low-lying areas.

Key drivers:

  • ·Sea level rise
  • ·Increased rainfall intensity
increasing

Bushfire

60/100

The area around Penneshaw has a notable bushfire risk due to the presence of surrounding scrubland and forests. Hot, dry summers increase the likelihood of bushfires.

Key drivers:

  • ·Increased temperatures
  • ·Drier conditions
increasing

Heat

50/100

Penneshaw experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events projected. This poses challenges for vulnerable populations and infrastructure.

Key drivers:

  • ·Rising global temperatures
  • ·Urban heat island effect (minimal in Penneshaw, but relevant)
increasing

Coastal

70/100

Penneshaw faces a high coastal risk due to its location on the coast. Sea level rise and increased storm intensity threaten coastal erosion and inundation of low-lying areas.

Key drivers:

  • ·Sea level rise
  • ·Increased storm surge
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 Penneshaw

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

50/100

Penneshaw experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events projected. This poses challenges for vulnerable populations and infrastructure.

Primary Drivers

  • ·Rising global temperatures
  • ·Urban heat island effect (minimal in Penneshaw, but relevant)
  • ·Reduced rainfall

Projections (RCP8.5)

2030

5.5

2050

6.0

Data source

flood Risk

40/100

Penneshaw faces a moderate risk of flooding, primarily from heavy rainfall events and potential coastal inundation. The risk is influenced by its coastal location and low-lying areas.

Primary Drivers

  • ·Sea level rise
  • ·Increased rainfall intensity
  • ·Storm surges

Projections (RCP8.5)

2030

4.5

2050

5.0

Data source

coastal Risk

70/100

Penneshaw faces a high coastal risk due to its location on the coast. Sea level rise and increased storm intensity threaten coastal erosion and inundation of low-lying areas.

Primary Drivers

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

Projections (RCP8.5)

2030

7.5

2050

8.0

Data source

bushfire Risk

60/100

The area around Penneshaw has a notable bushfire risk due to the presence of surrounding scrubland and forests. Hot, dry summers increase the likelihood of bushfires.

Primary Drivers

  • ·Increased temperatures
  • ·Drier conditions
  • ·Vegetation dryness

Projections (RCP8.5)

2030

6.5

2050

7.0

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums are likely to increase due to climate risks.

Price Impact

Properties in high-risk areas may experience price reductions.

Buyer Checklist

  • 1.Check flood maps and bushfire prone area designations.
  • 2.Assess the property's vulnerability to coastal erosion.
  • 3.Inquire about insurance costs and coverage.
  • 4.Consider the long-term climate risks when making a purchase decision.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Eastern Cove
Elevation Range
0-30 meters
Flood Zone
Coastal Inundation Zone

Low-lying areas near the coast are most vulnerable to flooding.

View council flood map

Bushfire Evidence

Distance to Bushland
Adjacent to scrubland
Planning Overlay
CFS Bushfire Prone Area Map
Bushfire Prone Area
Yes

Check the CFS website for current fire danger ratings.

Heat Evidence

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

Heatwaves are becoming more frequent and intense.

Coastal Evidence

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

Historical Climate Events

2007
floodModerate

Heavy rainfall caused localized flooding in low-lying areas of Penneshaw.

Source
2019
bushfireMajor

Bushfires on Kangaroo Island significantly impacted the region, though Penneshaw was not directly impacted, smoke and ash were present.

Source
2023
heatwaveModerate

A prolonged heatwave resulted in record temperatures in Penneshaw and surrounding areas.

Source
2016
stormMinor

A severe storm caused minor damage to coastal infrastructure in Penneshaw.

Source

Climate Outlook to 2050

Projections based on CSIRO and BOM climate modelling. Scenario: RCP8.5

HazardToday20302050
flood404.5(+0.5)5.0(+1.0)
bushfire606.5(+0.5)7.0(+1.0)
heat505.5(+0.5)6.0(+1.0)
coastal707.5(+0.5)8.0(+1.0)

By 2030, Penneshaw is projected to experience a moderate increase in overall climate risk, with all hazards showing a noticeable increase. Coastal erosion and inundation will become more frequent, and bushfire risk will continue to rise due to drier conditions.

CSIRO Climate Projections

Adaptation Recommendations

Coastal Protection Measures

Near-term

Implement coastal protection measures such as seawalls and dune restoration to mitigate the impacts of sea level rise and coastal erosion.

Est. cost: High

Learn more

Bushfire Preparedness Planning

Immediate

Develop and implement comprehensive bushfire preparedness plans, including community education programs and fuel reduction strategies.

Est. cost: Medium

Learn more

Heatwave Early Warning System

Near-term

Establish a heatwave early warning system to alert residents of impending heatwave events and provide guidance on how to stay safe.

Est. cost: Low

Learn more

Water Conservation Strategies

Long-term

Implement water conservation strategies to address potential water shortages due to climate change.

Est. cost: Medium

Learn more

Community Resilience Programs

Long-term

Develop community resilience programs to help residents cope with the impacts of climate change, such as extreme weather events and displacement.

Est. cost: Low

Learn more

About Penneshaw's Climate Risk Profile

Penneshaw, located on Kangaroo Island, is increasingly vulnerable to the impacts of climate change. The primary risks include coastal inundation due to sea level rise, increased bushfire frequency and intensity, and more frequent heatwave events.

The coastal risk is particularly pronounced, with projections indicating significant sea level rise by 2050. This will likely lead to increased erosion and inundation of low-lying coastal areas, impacting infrastructure and property.

Bushfire risk is also a major concern, as hotter and drier conditions create a more conducive environment for fires to start and spread rapidly. The surrounding scrubland and forests contribute to this risk.

Heatwaves are expected to become more frequent and intense, posing health risks to vulnerable populations, especially the elderly and those with pre-existing conditions. Infrastructure may also be strained during extreme heat events.

Addressing these climate risks requires a combination of mitigation and adaptation strategies, including reducing greenhouse gas emissions, implementing coastal protection measures, improving bushfire preparedness, and enhancing community resilience to heatwaves.

Data sources: BOM · CSIRO · CFS · SA SES · Kangaroo Island Council

Local Government Resources

Kangaroo Island Council

Climate StrategyFlood MapsEmergency Services

Frequently Asked Questions

What are the main climate change risks facing Penneshaw?

The main risks include coastal inundation due to sea level rise, increased bushfire frequency and intensity, and more frequent heatwave events.

How will sea level rise affect Penneshaw?

Sea level rise is projected to cause increased coastal erosion and inundation of low-lying areas, potentially impacting infrastructure and property.

What can I do to prepare for bushfires in Penneshaw?

You can prepare by clearing vegetation around your property, having a bushfire survival plan, and staying informed about fire danger ratings.

How can I stay safe during a heatwave in Penneshaw?

Stay indoors in air-conditioned environments, drink plenty of water, and avoid strenuous activity during the hottest part of the day.

What is the local council doing to address climate change in Penneshaw?

The Kangaroo Island Council is developing and implementing climate adaptation strategies to address the specific risks facing the region.

Where can I find more information about climate change impacts in Penneshaw?

You can find more information on the Kangaroo Island Council website, the South Australian Department for Environment and Water website, and the CSIRO website.

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