Climate Risk Profile for Merriwa, NSW

Merriwa, New South Wales· 2329
Updated Mar 2026

Merriwa faces increasing risks from bushfires and heatwaves, with moderate flood risk. Climate change is expected to exacerbate these hazards, requiring proactive adaptation measures. The town is not exposed to coastal risks.

Is Merriwa Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Merriwa, 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 Merriwa

Flood

Merriwa faces a moderate risk of flooding, primarily from heavy rainfall events and the nearby Merriwa River. Local topography can exacerbate flood conditions.

Key drivers:

  • ·Increased rainfall intensity
  • ·Urban development

Bushfire

The area surrounding Merriwa is bushfire-prone, with a significant risk during dry periods and heatwaves. Grasslands and nearby bushland contribute to the fire risk.

Key drivers:

  • ·Drier conditions
  • ·Increased fuel load

Heat

Merriwa experiences high temperatures during summer, with the risk of heatwaves increasing due to climate change. This poses a threat to vulnerable populations.

Key drivers:

  • ·Rising average temperatures
  • ·More frequent heatwaves

Coastal

Merriwa is located inland and does not face any direct coastal risks.

Wind

Data being compiled

Storm

Data being compiled

Social

Data being compiled

Energy

Data being compiled

In-Depth Climate Risk Guides for Merriwa

Detailed Hazard Analysis

heat Risk

Merriwa experiences high temperatures during summer, with the risk of heatwaves increasing due to climate change. This poses a threat to vulnerable populations.

Primary Drivers

  • ·Rising average temperatures
  • ·More frequent heatwaves
  • ·Urban heat island effect
Data source

flood Risk

Merriwa faces a moderate risk of flooding, primarily from heavy rainfall events and the nearby Merriwa River. Local topography can exacerbate flood conditions.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Urban development
  • ·Climate change
Data source

coastal Risk

Merriwa is located inland and does not face any direct coastal risks.

Data source

bushfire Risk

The area surrounding Merriwa is bushfire-prone, with a significant risk during dry periods and heatwaves. Grasslands and nearby bushland contribute to the fire risk.

Primary Drivers

  • ·Drier conditions
  • ·Increased fuel load
  • ·Higher temperatures
Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase due to the rising risk of bushfires and floods.

Price Impact

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

Buyer Checklist

  • 1.Check flood maps and bushfire prone area designations.
  • 2.Assess the property's vulnerability to heatwaves.
  • 3.Inquire about insurance costs and coverage.
  • 4.Review local council's climate adaptation plans.

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

Develop a heatwave management plan

Immediate

Implement strategies to protect vulnerable residents during heatwaves, such as cooling centers and community outreach programs.

Est. cost: Low

Learn more

Enhance bushfire preparedness

Near-term

Conduct regular bushfire risk assessments, implement fuel reduction programs, and improve community education on bushfire safety.

Est. cost: Medium

Learn more

Improve flood mitigation infrastructure

Near-term

Upgrade drainage systems, construct flood levees, and implement early warning systems to reduce the impact of floods.

Est. cost: High

Learn more

Promote water conservation

Long-term

Implement water restrictions, encourage water-efficient landscaping, and invest in water recycling infrastructure to ensure water security during droughts.

Est. cost: Medium

Learn more

About Merriwa's Climate Risk Profile

Merriwa, located in the Upper Hunter region of New South Wales, is increasingly vulnerable to the impacts of climate change. The primary concerns are rising temperatures, increased bushfire risk, and moderate flooding potential.

The region's climate is characterized by hot summers and mild winters. However, climate change is leading to more frequent and intense heatwaves, posing a significant risk to public health, particularly for the elderly and those with pre-existing conditions. The increased heat also contributes to drier conditions, exacerbating the bushfire risk.

Bushfires are a major threat to Merriwa, with the surrounding grasslands and bushland providing ample fuel. The risk is heightened during dry periods and heatwaves, making the town susceptible to devastating fires. Effective bushfire management and community preparedness are crucial.

Flooding is another concern, with the Merriwa River and heavy rainfall events posing a moderate risk. Local topography can worsen flood conditions, potentially impacting homes and infrastructure. Improved drainage and flood mitigation measures are needed to reduce the impact of floods.

While Merriwa is not directly exposed to coastal risks, the broader impacts of climate change, such as disruptions to supply chains and economic activity, can still affect the town. Addressing these challenges requires a coordinated effort from local government, residents, and businesses.

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 for Merriwa?

The main climate change risks for Merriwa are increasing heatwaves, heightened bushfire risk, and moderate flooding potential.

How will climate change affect property values in Merriwa?

Properties in high-risk areas may experience a decrease in value due to the increasing risk of bushfires and floods.

What is the local council doing to address climate change?

The Upper Hunter Shire Council is developing and implementing climate adaptation strategies to reduce the impact of climate change on the community.

How can I prepare my home for a bushfire?

You can prepare your home for a bushfire by clearing vegetation around your property, installing fire-resistant materials, and developing a bushfire survival plan.

Where can I find information about flood risks in Merriwa?

You can find information about flood risks in Merriwa on the Upper Hunter Shire Council website and the NSW State Emergency Service website.

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 Merriwa, 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

Climate Risk Assessment for Merriwa, NSW | ClimateNest