Climate Risk in Wilton, NSW

Wilton, New South Wales· Wollondilly· 2571
Updated May 2026

Wilton is a suburb in the Wollondilly Shire, NSW, that faces moderate risks from flooding and bushfires. Climate change is expected to exacerbate these risks, particularly through increased rainfall intensity and hotter, drier conditions. Residents should be prepared for potential impacts and take steps to mitigate their exposure.

Is Wilton Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Wilton, New South Wales, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$49 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$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections

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Overall Risk Score

Address-level

Hazard Breakdown

Flood, bushfire, heat, coastal and storm exposure are all assessed in this area. The score that matters is the property's own: a ClimateNest report scores the address across eight hazards, with insurance and value projections to 2050.

Climate Hazard Breakdown for Wilton

Flood

Wilton faces a moderate risk of flooding due to its proximity to the Nepean River and local creeks. Intense rainfall events can lead to flash flooding and riverine flooding.

Key drivers:

  • ·Increased rainfall intensity
  • ·Urban development increasing runoff

Bushfire

Wilton is located in a bushfire-prone area, with significant bushland surrounding the suburb. Hot, dry conditions and strong winds can increase the risk of bushfires.

Key drivers:

  • ·Increased frequency of heatwaves
  • ·Drier vegetation

Heat

Wilton experiences moderately high temperatures during summer, with potential for heatwaves. Climate change is expected to increase the frequency and intensity of heat events.

Key drivers:

  • ·Rising average temperatures
  • ·Increased frequency of heatwaves

Coastal

Wilton is located inland and does not face a direct risk from coastal hazards such as sea level rise or coastal erosion.

Wind

Data being compiled

Storm

Data being compiled

Social

Data being compiled

Energy

Data being compiled

In-Depth Climate Risk Guides for Wilton

Detailed Hazard Analysis

heat Risk

Wilton experiences moderately high temperatures during summer, with potential for heatwaves. Climate change is expected to increase the frequency and intensity of heat events.

Primary Drivers

  • ·Rising average temperatures
  • ·Increased frequency of heatwaves
Data source

flood Risk

Wilton faces a moderate risk of flooding due to its proximity to the Nepean River and local creeks. Intense rainfall events can lead to flash flooding and riverine flooding.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Urban development increasing runoff
Data source

coastal Risk

Wilton is located inland and does not face a direct risk from coastal hazards such as sea level rise or coastal erosion.

Data source

bushfire Risk

Wilton is located in a bushfire-prone area, with significant bushland surrounding the suburb. Hot, dry conditions and strong winds can increase the risk of bushfires.

Primary Drivers

  • ·Increased frequency of heatwaves
  • ·Drier vegetation
Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase due to the elevated risk of flooding and bushfires.

Price Impact

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

Buyer Checklist

  • 1.Check flood maps and bushfire prone land maps.
  • 2.Assess property's vulnerability to flooding and bushfires.
  • 3.Obtain insurance quotes.
  • 4.Develop an emergency plan.

How the region's climate is projected to change

Regional projections, not a forecast for this street. Figures are from the WA Department of Water and Environmental Regulation's climate projections for the South Western Flatlands region, which draws on CSIRO and Bureau of Meteorology modelling.

Temperature

+0.5 to 1.1°C by 2030

Above the 1986–2005 climate, on all emissions scenarios. By 2090, 1.2 to 2.0°C under intermediate emissions or 2.6 to 4.0°C under high emissions.

Rainfall

Winter rain down up to 15% by 2030

The South West has been drying since 1970, and the decline has been larger than anywhere else in Australia. Heavy rainfall events are projected to become more intense even as totals fall.

Fire weather

Harsher, magnitude uncertain

High confidence that fire weather becomes harsher, low confidence in the size of the change, because it depends heavily on summer rainfall.

Sea level

+0.12 m by 2030

At the Fremantle gauge, range 0.07 to 0.16 m. Very high confidence that sea levels continue to rise through the century.

Source: Department of Water and Environmental Regulation (WA), Western Australian climate projections: summary, September 2021, South Western Flatlands chapter. Read the projections →

Adaptation Recommendations

Improve stormwater drainage

Near-term

Upgrade stormwater infrastructure to handle increased rainfall intensity and reduce the risk of flash flooding.

Est. cost: Medium

Learn more

Implement bushfire mitigation measures

Immediate

Undertake hazard reduction burns, create firebreaks, and educate residents on bushfire preparedness.

Est. cost: Medium

Learn more

Develop a heatwave management plan

Near-term

Establish cooling centers, provide public awareness campaigns, and ensure vulnerable residents have access to support during heatwaves.

Est. cost: Low

Learn more

Promote water conservation

Long-term

Encourage residents to reduce water consumption through water-efficient appliances and landscaping practices.

Est. cost: Low

Learn more

About Wilton's Climate Risk Profile

Wilton, located in the Wollondilly Shire of New South Wales, is a growing suburb with a mix of residential and rural areas. The suburb's proximity to the Nepean River and surrounding bushland makes it vulnerable to both flooding and bushfires.

Climate change is projected to increase the frequency and intensity of extreme weather events in the region. This includes more intense rainfall, leading to a higher risk of flash flooding and riverine flooding. The hotter, drier conditions will also increase the risk of bushfires, particularly during the summer months.

Residents of Wilton should be aware of these risks and take steps to prepare their homes and families. This includes having an emergency plan, maintaining their properties to reduce fire hazards, and staying informed about weather warnings and emergency alerts.

The Wollondilly Shire Council is working to address the challenges of climate change through various initiatives, including improving stormwater management, implementing bushfire mitigation strategies, and promoting sustainable development practices. These efforts are aimed at building a more resilient community that can withstand the impacts of a changing climate.

Suburb pages describe the local picture. The address-level assessment, with its data sources and its dollar projections, is in the ClimateNest report.

Local Government Resources

Frequently Asked Questions

What are the main climate risks facing Wilton?

Wilton faces risks from flooding, bushfires, and heatwaves, which are expected to increase with climate change.

How can I prepare my home for a flood?

Clear gutters and downpipes, raise electrical appliances, and have an emergency plan in place.

What should I do during a bushfire?

Stay informed about fire warnings, evacuate if advised, and have a bushfire survival plan.

How can I stay safe during a heatwave?

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

What is the council doing to address climate change?

The Wollondilly Shire Council is implementing various initiatives to improve stormwater management, mitigate bushfire risks, and promote sustainable development.

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 Wilton, use our analysis tool.

Check Your flood Risk Now

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Free instant previewCSIRO-powered data

What A$49 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$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections