Climate Risk Assessment for Hamilton, Victoria

Hamilton, Victoria· Southern Grampians· 3300
Medium Risk
Updated Mar 2026

Hamilton faces increasing risks from flooding and heatwaves due to climate change. Bushfire risk is also a concern. Residents should prepare for more frequent extreme weather events.

Overall Risk Score

52/100
Medium

Confidence: Medium

Hazard Breakdown

Flood
6.0
Bushfire
4.0
Heat
6.0
Coastal
1.0

Climate Hazard Breakdown for Hamilton

increasing

Flood

60/100

Hamilton faces a moderate risk of flooding, primarily from the Grange Burn and associated waterways. Climate change is expected to increase rainfall intensity, potentially leading to more frequent and severe flood events.

Key drivers:

  • ·Increased rainfall intensity
  • ·Urban development
increasing

Bushfire

40/100

The risk of bushfire in Hamilton is moderate due to the presence of grasslands and nearby forested areas. Drier conditions and higher temperatures associated with climate change are expected to increase the frequency and intensity of bushfires.

Key drivers:

  • ·Increased temperatures
  • ·Drier conditions
increasing

Heat

60/100

Hamilton is projected to experience more frequent and intense heatwaves due to climate change. This poses a risk to vulnerable populations, such as the elderly and those with chronic health conditions.

Key drivers:

  • ·Increased greenhouse gas emissions
  • ·Urban heat island effect
stable

Coastal

10/100

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

Key drivers:

  • ·Inland location
stable

Wind

28/100

Moderate wind risk — cold fronts and gusty winds

stable

Storm

32/100

Moderate storm risk — severe thunderstorms

stable

Social

21/100

Moderate social stability

increasing

Energy

35/100

Moderate energy costs — heating and cooling needs

In-Depth Climate Risk Guides for Hamilton

Detailed Hazard Analysis

heat Risk

60/100

Hamilton is projected to experience more frequent and intense heatwaves due to climate change. This poses a risk to vulnerable populations, such as the elderly and those with chronic health conditions.

Primary Drivers

  • ·Increased greenhouse gas emissions
  • ·Urban heat island effect

Projections (RCP8.5)

2030

6.8

2050

7.5

Data source

flood Risk

60/100

Hamilton faces a moderate risk of flooding, primarily from the Grange Burn and associated waterways. Climate change is expected to increase rainfall intensity, potentially leading to more frequent and severe flood events.

Primary Drivers

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

Projections (RCP8.5)

2030

6.5

2050

7.2

Data source

coastal Risk

10/100

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

Primary Drivers

  • ·Inland location

Projections (RCP8.5)

2030

1.0

2050

1.0

Data source

bushfire Risk

40/100

The risk of bushfire in Hamilton is moderate due to the presence of grasslands and nearby forested areas. Drier conditions and higher temperatures associated with climate change are expected to increase the frequency and intensity of bushfires.

Primary Drivers

  • ·Increased temperatures
  • ·Drier conditions
  • ·Fuel load

Projections (RCP8.5)

2030

4.5

2050

5.1

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase due to increased flood and bushfire risk.

Price Impact

Property values may be affected by increased climate risks.

Buyer Checklist

  • 1.Check flood maps and bushfire overlays.
  • 2.Assess property's vulnerability to heatwaves.
  • 3.Consider insurance costs.
  • 4.Investigate council's climate adaptation plans.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Grange Burn
Elevation Range
180-220m
Flood Zone
Areas along Grange Burn are designated as flood zones.

The Southern Grampians Shire Council maintains flood maps and provides information on flood preparedness.

View council flood map

Bushfire Evidence

Distance to Bushland
Within 5km of significant bushland areas.
Planning Overlay
Bushfire Management Overlay applies to some areas.
Bushfire Prone Area
Yes

Check with the Southern Grampians Shire Council for specific bushfire risk information for your property.

Heat Evidence

Avg January Max Temp
28.5°C
Heat Stress Days/Year
2 days

Heatwaves are becoming more frequent and intense in the region.

Coastal Evidence

Distance to Coast
180 km
Sea Level Rise Exposure
Not applicable.
Erosion Risk
Not applicable.

Historical Climate Events

2011
floodModerate

Significant flooding occurred in Hamilton following heavy rainfall, impacting homes and businesses.

Source
2009
heatwaveMajor

The 2009 heatwave resulted in record high temperatures and increased heat-related illnesses in Hamilton.

Source
2015
bushfireModerate

Bushfires in the surrounding region caused smoky conditions and increased fire risk in Hamilton.

Source
2016
floodMinor

Minor flooding occurred along the Grange Burn after a period of heavy rain.

Source

Climate Outlook to 2050

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

HazardToday20302050
flood606.5(+0.5)7.0(+1.0)
bushfire404.3(+0.3)4.6(+0.6)
heat606.8(+0.8)7.5(+1.5)
coastal101.01.0

By 2030, Hamilton is projected to experience a noticeable increase in the frequency and intensity of heatwaves and flooding events. Bushfire risk will also be slightly elevated.

CSIRO Climate Projections

Adaptation Recommendations

Improve Drainage Infrastructure

Near-term

Upgrade drainage systems to handle increased rainfall intensity and reduce flood risk.

Est. cost: High

Learn more

Develop a Heatwave Management Plan

Immediate

Implement a plan to protect vulnerable populations during heatwaves, including cooling centers and public awareness campaigns.

Est. cost: Medium

Learn more

Bushfire Preparedness Programs

Near-term

Implement community education programs to promote bushfire preparedness and reduce the risk of property damage.

Est. cost: Low

Learn more

Water Sensitive Urban Design

Long-term

Incorporate water sensitive urban design principles in new developments to reduce stormwater runoff and improve water quality.

Est. cost: Medium

Learn more

Community Resilience Building

Long-term

Foster community networks and support systems to enhance resilience to climate change impacts.

Est. cost: Low

Learn more

About Hamilton's Climate Risk Profile

Hamilton, located in the Southern Grampians region of Victoria, is projected to experience a range of climate change impacts. The most significant risks include increased flooding, more frequent and intense heatwaves, and a heightened risk of bushfires.

Flooding is a primary concern for Hamilton, with the Grange Burn posing a significant risk. Climate change is expected to increase rainfall intensity, leading to more frequent and severe flood events. This could impact residential and commercial properties, as well as infrastructure.

Heatwaves are also projected to become more common and intense in Hamilton. This poses a risk to vulnerable populations, such as the elderly and those with chronic health conditions. Residents should take steps to prepare for heatwaves, such as staying hydrated and seeking air-conditioned environments.

The risk of bushfires is also expected to increase in Hamilton due to drier conditions and higher temperatures. Residents should be aware of the risks and take steps to protect their properties.

While Hamilton is not directly exposed to coastal hazards, the broader impacts of climate change, such as disruptions to supply chains and increased migration, could indirectly affect the town.

Data sources: BOM · CSIRO · EMV · Southern Grampians Shire Council

Local Government Resources

Southern Grampians Shire Council

Frequently Asked Questions

What are the main climate change risks for Hamilton?

The main climate change risks for Hamilton are increased flooding, more frequent and intense heatwaves, and a heightened risk of bushfires.

How will climate change affect property values in Hamilton?

Property values in Hamilton may be affected by increased climate risks, such as flooding and bushfires. It is important to consider these risks when buying or selling property.

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

The Southern Grampians Shire Council is developing and implementing climate adaptation plans to address the risks posed by climate change. These plans include measures to reduce flood risk, manage heatwaves, and prepare for bushfires.

How can I prepare for heatwaves in Hamilton?

To prepare for heatwaves in Hamilton, stay hydrated, seek air-conditioned environments, and check on vulnerable neighbors and family members.

Where can I find information on flood risks in Hamilton?

You can find information on flood risks in Hamilton on the Southern Grampians Shire Council website and from the Victorian State Emergency Service.

What kind of insurance should I consider given the climate risks?

Given the increasing climate risks, it's wise to review your home and contents insurance to ensure it covers flood and fire damage. Consider supplemental flood insurance if your property is in a flood-prone area.

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What A$69 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$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections