Climate Risk Profile: Marayong, NSW

Marayong, New South Wales· Blacktown· 2148
Updated May 2026

Marayong faces moderate risks from flooding and heatwaves, with bushfire risk also present. Climate change is expected to exacerbate these risks, particularly heatwaves and flooding. Residents should prepare for more frequent and intense extreme weather events.

Is Marayong Safe from Climate Risk?

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

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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 Marayong

Flood

Marayong faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to flash flooding.

Key drivers:

  • ·Increased rainfall intensity
  • ·Urban development

Bushfire

Bushfire risk in Marayong is moderate, with some areas bordering bushland. Hot, dry conditions and strong winds can increase the likelihood of bushfires.

Key drivers:

  • ·Dry vegetation
  • ·High temperatures

Heat

Marayong experiences a high risk of heatwaves, with increasing average temperatures and more frequent heat stress events. Vulnerable populations are particularly at risk.

Key drivers:

  • ·Rising global temperatures
  • ·Urban heat island effect

Coastal

Coastal risk is low in Marayong due to its distance from the coast. Sea level rise and coastal erosion are not significant concerns.

Key drivers:

  • ·Distance from coast

Wind

Data being compiled

Storm

Data being compiled

Social

Data being compiled

Energy

Data being compiled

In-Depth Climate Risk Guides for Marayong

Detailed Hazard Analysis

heat Risk

Marayong experiences a high risk of heatwaves, with increasing average temperatures and more frequent heat stress events. Vulnerable populations are particularly at risk.

Primary Drivers

  • ·Rising global temperatures
  • ·Urban heat island effect
  • ·Reduced green spaces
Data source

flood Risk

Marayong faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to flash flooding.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Urban development
  • ·Inadequate drainage infrastructure
Data source

coastal Risk

Coastal risk is low in Marayong due to its distance from the coast. Sea level rise and coastal erosion are not significant concerns.

Primary Drivers

  • ·Distance from coast
Data source

bushfire Risk

Bushfire risk in Marayong is moderate, with some areas bordering bushland. Hot, dry conditions and strong winds can increase the likelihood of bushfires.

Primary Drivers

  • ·Dry vegetation
  • ·High temperatures
  • ·Wind patterns
Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase in the future due to increased flood and heatwave risks.

Price Impact

Properties in flood-prone areas may experience a negative impact on property values.

Buyer Checklist

  • 1.Check flood maps and historical flood data.
  • 2.Assess bushfire risk if property borders bushland.
  • 3.Consider energy efficiency and cooling options for heatwaves.
  • 4.Review insurance coverage for flood and fire.

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

Upgrade Drainage Infrastructure

Near-term

Invest in upgrading drainage infrastructure to handle increased rainfall intensity and reduce flood risk.

Est. cost: High

Learn more

Increase Green Spaces

Near-term

Plant more trees and create green spaces to mitigate the urban heat island effect and provide shade during heatwaves.

Est. cost: Medium

Learn more

Community Awareness Programs

Immediate

Implement community awareness programs to educate residents about climate risks and how to prepare for extreme weather events.

Est. cost: Low

Learn more

Bushfire Preparedness

Near-term

Residents living near bushland should maintain defensible spaces and have a bushfire survival plan.

Est. cost: Low

Learn more

Develop a Heatwave Management Plan

Immediate

Create a heatwave management plan to protect vulnerable populations during extreme heat events, including cooling centers and outreach programs.

Est. cost: Medium

Learn more

About Marayong's Climate Risk Profile

Marayong, located in Western Sydney, is susceptible to several climate-related risks. The primary concerns are flooding due to increased rainfall intensity and heatwaves resulting from rising temperatures. Bushfire risk is also a factor, especially in areas near bushland.

Flooding is a significant concern due to the suburb's proximity to waterways and existing drainage challenges. Climate change projections indicate an increase in extreme rainfall events, which could overwhelm existing infrastructure and lead to more frequent and severe flooding.

Heatwaves are another major risk, with average temperatures expected to rise in the coming decades. This will lead to more frequent and intense heat stress events, particularly affecting vulnerable populations such as the elderly and those with chronic health conditions.

While bushfire risk is moderate, it should not be ignored. Residents living near bushland need to be aware of the risks and take appropriate precautions. Maintaining defensible spaces and having a bushfire survival plan are essential.

Overall, Marayong needs to adapt to the changing climate by investing in improved drainage infrastructure, increasing green spaces to mitigate the urban heat island effect, and implementing community awareness programs to prepare residents for extreme weather events.

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 change risks in Marayong?

The main climate change risks in Marayong are increased flooding due to more intense rainfall, more frequent and severe heatwaves, and a moderate risk of bushfires.

How will climate change affect property values in Marayong?

Properties in flood-prone areas may experience a negative impact on property values. Increased insurance premiums due to climate risks may also affect property values.

What is the council doing to address climate change in Marayong?

Blacktown City Council is implementing various initiatives to address climate change, including upgrading drainage infrastructure, increasing green spaces, and developing a climate resilience strategy.

How can I prepare for heatwaves in Marayong?

Stay indoors during the hottest part of the day, drink plenty of water, and check on vulnerable neighbors. Consider installing air conditioning or visiting a cooling center.

What should I do if my property is located in a bushfire-prone area?

Maintain a defensible space around your property, have a bushfire survival plan, and monitor fire danger ratings during the bushfire season.

Where can I find information about flood risks in Marayong?

You can find information about flood risks on the Blacktown City Council website, including flood maps and historical flood data.

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 Marayong, use our analysis tool.

Check Your flood Risk Now

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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