Climate Risk in Horsham, VIC

Horsham, Victoria· Horsham Rural City· 3400
Medium Risk
Updated Mar 2026

Horsham is a regional city in Victoria that faces moderate climate risks, particularly from flooding and heatwaves. Climate change is expected to exacerbate these risks, potentially impacting infrastructure and vulnerable populations. Residents should prepare for more frequent and intense extreme weather events.

Overall Risk Score

55/100
Medium

Confidence: Medium

Hazard Breakdown

Flood
6.0
Bushfire
4.0
Heat
7.0
Coastal
1.0

Climate Hazard Breakdown for Horsham

increasing

Flood

60/100

Horsham faces a moderate risk of flooding due to its proximity to the Wimmera River and other waterways. Climate change is expected to increase the frequency and intensity of heavy rainfall events, exacerbating flood risk.

Key drivers:

  • ·Increased rainfall intensity
  • ·Riverine flooding
increasing

Bushfire

40/100

Horsham has a relatively low bushfire risk compared to other parts of Victoria, but is still susceptible due to surrounding grasslands and bushland. Drier conditions and higher temperatures could increase the risk of bushfires.

Key drivers:

  • ·Increased temperatures
  • ·Drier conditions
increasing

Heat

70/100

Horsham experiences hot summers and is vulnerable to heatwaves. Climate change is projected to increase the frequency, intensity, and duration of heatwaves, posing a significant risk to vulnerable populations.

Key drivers:

  • ·Increased temperatures
  • ·Heatwave frequency
stable

Coastal

10/100

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

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 Horsham

Detailed Hazard Analysis

heat Risk

70/100

Horsham experiences hot summers and is vulnerable to heatwaves. Climate change is projected to increase the frequency, intensity, and duration of heatwaves, posing a significant risk to vulnerable populations.

Primary Drivers

  • ·Increased temperatures
  • ·Heatwave frequency
  • ·Urban heat island effect

Projections (RCP8.5)

2030

7.5

2050

8.0

Data source

flood Risk

60/100

Horsham faces a moderate risk of flooding due to its proximity to the Wimmera River and other waterways. Climate change is expected to increase the frequency and intensity of heavy rainfall events, exacerbating flood risk.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Riverine flooding
  • ·Urban development

Projections (RCP8.5)

2030

6.5

2050

7.0

Data source

coastal Risk

10/100

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

Projections (RCP8.5)

2030

1.0

2050

1.0

Data source

bushfire Risk

40/100

Horsham has a relatively low bushfire risk compared to other parts of Victoria, but is still susceptible due to surrounding grasslands and bushland. Drier conditions and higher temperatures could increase the risk of bushfires.

Primary Drivers

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

Projections (RCP8.5)

2030

4.5

2050

5.0

Data source

What This Means for Property Owners

Insurance Outlook

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

Price Impact

Properties in flood-prone areas may experience a decrease in value.

Buyer Checklist

  • 1.Check flood maps and insurance costs.
  • 2.Assess property's vulnerability to heatwaves.
  • 3.Consider energy efficiency and water conservation measures.
  • 4.Review council's climate adaptation plans.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Wimmera River
Elevation Range
120-140m
Flood Zone
Areas adjacent to the Wimmera River are designated as flood zones.

The Wimmera River has a history of flooding in Horsham. The council maintains flood maps and provides information to residents on how to prepare for floods.

View council flood map

Bushfire Evidence

Distance to Bushland
Within 5km of significant bushland areas.
Planning Overlay
Bushfire Management Overlay (BMZ) may apply to some properties.
Bushfire Prone Area
Yes

While not as high-risk as some other areas, Horsham is still susceptible to bushfires due to surrounding grasslands and bushland. Residents should maintain their properties and be aware of fire danger ratings.

Heat Evidence

Avg January Max Temp
31°C
Heat Stress Days/Year
3 days

Horsham experiences hot summers with average maximum temperatures exceeding 30 degrees Celsius in January. Heatwaves can pose a significant risk to vulnerable populations.

Coastal Evidence

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

Historical Climate Events

2011
floodModerate

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

Source
2009
heatwaveMajor

The 2009 heatwave resulted in record-breaking temperatures and increased demand on emergency services.

Source
2010
floodMinor

Minor flooding occurred in Horsham following heavy rainfall.

Source
2023
floodModerate

Flooding impacted the region, causing damage to infrastructure and properties.

Source

Climate Outlook to 2050

Projections based on CSIRO and BOM climate modelling. Scenario: RCP4.5

HazardToday20302050
flood606.5(+0.5)7.0(+1.0)
bushfire404.2(+0.2)4.5(+0.5)
heat707.6(+0.6)8.5(+1.5)
coastal101.01.0

Under a moderate emissions scenario, Horsham is projected to experience a slight increase in overall climate risk by 2030, with the most significant increases in flood and heatwave risk.

CSIRO Climate Projections

Adaptation Recommendations

Upgrade flood defenses

Near-term

Invest in infrastructure to protect against increased flood risk, such as levees and improved drainage systems.

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

Improve building energy efficiency

Long-term

Promote energy-efficient building design and retrofitting to reduce energy consumption and greenhouse gas emissions.

Est. cost: Medium

Learn more

Enhance community resilience

Near-term

Build community capacity to prepare for and respond to climate-related disasters through education and training programs.

Est. cost: Low

Learn more

About Horsham's Climate Risk Profile

Horsham is located in the Wimmera region of Victoria and is susceptible to various climate-related hazards. The most significant risks are flooding from the Wimmera River and heatwaves during the summer months. Climate change is projected to increase the frequency and intensity of these events, posing challenges for the local community.

The risk of flooding is driven by increased rainfall intensity and riverine flooding. Urban development can also exacerbate flood risk by increasing runoff. The local council has implemented measures to mitigate flood risk, but further action may be needed to adapt to climate change.

Heatwaves are another major concern for Horsham. The city experiences hot summers, and climate change is expected to increase the frequency, intensity, and duration of heatwaves. This poses a significant risk to vulnerable populations, such as the elderly and those with chronic health conditions.

While Horsham is not directly exposed to coastal risks, the broader impacts of climate change, such as disruptions to supply chains and increased migration, could indirectly affect the city. It is important for Horsham to adapt to climate change to protect its community and economy.

Adapting to climate change will require a multi-faceted approach, including reducing greenhouse gas emissions, implementing adaptation measures, and raising awareness among the community. The local council, businesses, and residents all have a role to play in building a climate-resilient Horsham.

Data sources: BOM · CSIRO · SES Victoria · Horsham Rural City Council

Local Government Resources

Frequently Asked Questions

What are the main climate change risks for Horsham?

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

How is the Horsham Rural City Council addressing climate change?

The Horsham Rural City Council is developing and implementing strategies to reduce greenhouse gas emissions and adapt to the impacts of climate change. Check their website for details.

What can I do to prepare for heatwaves in Horsham?

During heatwaves, stay indoors in air-conditioned environments, drink plenty of water, and check on vulnerable neighbors and family members.

How can I protect my property from flooding in Horsham?

Check flood maps, ensure your property is adequately insured, and take steps to reduce the risk of water damage, such as raising electrical appliances and storing valuables above flood level.

Where can I find more information about climate change projections for Horsham?

You can find more information about climate change projections for Horsham on the Climate Change in Australia website and the CSIRO website.

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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