Climate Risk in Lewisham, NSW

Lewisham, New South Wales· Inner West· 2049

Medium Risk

Updated May 2026

Lewisham is a suburb in Sydney's Inner West, facing moderate risks from flooding and heatwaves. Climate change is expected to exacerbate these risks, particularly in the coming decades. Residents should prepare for more frequent and intense extreme weather events.

Overall Risk Score

52/100

Medium

Confidence: Medium

Hazard Breakdown

Flood

6.5

Bushfire

2.5

Heat

6.0

Coastal

1.0

Climate Hazard Breakdown for Lewisham

increasing

Flood

65/100

Lewisham faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to stormwater runoff and potential inundation of properties.

Key drivers:

·Increased rainfall intensity
·Urbanisation

stable

Bushfire

25/100

The risk of bushfire in Lewisham is relatively low due to its urban environment and limited vegetation. However, ember attacks from distant fires remain a potential concern during extreme weather conditions.

Key drivers:

·Proximity to bushland
·Dry vegetation

increasing

Heat

60/100

Lewisham experiences a moderate risk of heatwaves, particularly during the summer months. Urban heat island effect can exacerbate temperatures, posing health risks to vulnerable populations.

Key drivers:

·Climate change
·Urban heat island effect

stable

Coastal

10/100

Lewisham is not directly exposed to coastal hazards due to its inland location. Sea level rise and coastal erosion are not significant concerns for this suburb.

Key drivers:

·Sea level rise
·Storm surges

stable

Wind

28/100

Moderate wind risk — East Coast Lows and gust fronts

stable

Storm

39/100

Moderate storm risk — severe thunderstorms and hail

stable

Social

21/100

Moderate social stability — mixed urban density

increasing

Energy

35/100

Moderate energy costs — climate-driven cooling demand

In-Depth Climate Risk Guides for Lewisham

Should I Buy

Property buying guide with climate risk assessment

Flood Risk

Flood zone mapping, historical events, and projections

Bushfire Risk

BAL assessment, vegetation proximity, and fire history

Climate Safety

Multi-hazard safety assessment to 2050

Storm Risk

Severe weather, hail, and wind risk analysis

Heat Risk

Extreme heat days, urban heat island, and cooling costs

Insurance Costs

Premium estimates and insurance availability

Investment Score

Climate-adjusted property investment analysis

Detailed Hazard Analysis

heat Risk

60/100

Lewisham experiences a moderate risk of heatwaves, particularly during the summer months. Urban heat island effect can exacerbate temperatures, posing health risks to vulnerable populations.

Primary Drivers

·Climate change
·Urban heat island effect
·Lack of green spaces

Projections (RCP8.5)

2030

6.5

2050

7.0

Data source

flood Risk

65/100

Lewisham faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to stormwater runoff and potential inundation of properties.

Primary Drivers

·Increased rainfall intensity
·Urbanisation
·Inadequate drainage infrastructure

Projections (RCP8.5)

2030

7.0

2050

7.5

Data source

coastal Risk

10/100

Lewisham is not directly exposed to coastal hazards due to its inland location. Sea level rise and coastal erosion are not significant concerns for this suburb.

Primary Drivers

·Sea level rise
·Storm surges
·Coastal erosion

Projections (RCP8.5)

2030

1.0

2050

1.0

Data source

bushfire Risk

25/100

Primary Drivers

·Proximity to bushland
·Dry vegetation
·High winds

Projections (RCP8.5)

2030

2.7

2050

2.9

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase due to flood risk.

Price Impact

Potential for minor price impacts due to increased flood risk.

Buyer Checklist

1.Check flood history of the property
2.Assess the property's vulnerability to heatwaves
3.Consider the potential for increased insurance premiums
4.Review council's climate adaptation plans

Local Climate Evidence

Flood Evidence

Nearest Waterway: Hawthorne Canal
Elevation Range: 10-30 meters
Flood Zone: Potentially affected by stormwater flooding

Bushfire Evidence

Distance to Bushland: 2 km to nearest bushland
Planning Overlay: Not within a designated bushfire prone area
Bushfire Prone Area: No

Heat Evidence

Avg January Max Temp: 29.5°C
Heat Stress Days/Year: 3 days

Coastal Evidence

Distance to Coast: 8 km
Sea Level Rise Exposure: Not exposed to sea level rise
Erosion Risk: No erosion risk

Historical Climate Events

2022

floodModerate

Heavy rainfall caused stormwater flooding in low-lying areas of Lewisham, affecting some residential properties.

Source

2020

heatwaveModerate

A prolonged heatwave in January resulted in increased hospital admissions due to heat-related illnesses.

Source

2015

stormMinor

A severe storm caused localized flooding and power outages in Lewisham.

Source

Climate Outlook to 2050

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

Hazard	Today	2030	2050
flood	65	7.0(+0.5)	7.5(+1.0)
bushfire	25	2.7(+0.2)	2.9(+0.4)
heat	60	6.8(+0.8)	7.2(+1.2)
coastal	10	1.0	1.0

By 2030, Lewisham is projected to experience a moderate increase in overall climate risk, primarily driven by increased flooding and heatwave intensity.

CSIRO Climate Projections

Adaptation Recommendations

Improve stormwater drainage infrastructure

Near-term

Upgrade drainage systems to handle increased rainfall intensity and reduce the risk of flooding.

Est. cost: Medium

Learn more

Increase green spaces and tree canopy

Near-term

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

Est. cost: Low

Learn more

Develop a community heatwave plan

Immediate

Create a plan to support vulnerable residents during heatwaves, including cooling centers and outreach programs.

Est. cost: Low

Learn more

Promote water-sensitive urban design

Long-term

Implement water-sensitive urban design principles to reduce stormwater runoff and improve water quality.

Est. cost: Medium

Learn more

About Lewisham's Climate Risk Profile

Lewisham, located in the Inner West of Sydney, is primarily an urban residential area. The suburb's climate risks are mainly associated with flooding and heatwaves. Its location near waterways makes it susceptible to stormwater flooding during heavy rainfall events. The urban environment also contributes to the urban heat island effect, increasing temperatures during heatwaves.

Climate change projections indicate that Lewisham will experience more frequent and intense heatwaves, as well as increased rainfall intensity. This could lead to more severe flooding events and greater health risks associated with extreme heat. The community needs to adapt to these changing conditions to protect vulnerable populations and infrastructure.

While Lewisham is not directly exposed to coastal hazards, the broader impacts of climate change, such as disruptions to supply chains and increased energy demand, could indirectly affect the suburb. It is important for residents and businesses to consider these broader implications when planning for the future.

Addressing climate risks in Lewisham requires a multi-faceted approach, including improving stormwater drainage infrastructure, increasing green spaces to mitigate the urban heat island effect, and implementing community awareness programs to prepare residents for extreme weather events. Collaboration between local government, community organizations, and residents is essential to building a climate-resilient suburb.

Data sources: BOM · CSIRO · NSW SES · NSW RFS · Inner West Council

Local Government Resources

Inner West Council

Climate Strategy Flood Maps Emergency Services

Frequently Asked Questions

What are the main climate risks facing Lewisham?

The main climate risks facing Lewisham are flooding and heatwaves. Climate change is expected to increase the frequency and intensity of these events.

How will climate change affect property values in Lewisham?

Climate change may have a minor impact on property values in Lewisham due to increased flood risk. Properties in low-lying areas may be more vulnerable.

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

The Inner West Council is implementing various initiatives to address climate change, including improving stormwater drainage, increasing green spaces, and developing a climate adaptation plan.

How can I prepare my home for extreme weather events in Lewisham?

You can prepare your home by clearing gutters and downpipes, installing flood barriers, and ensuring adequate insulation to reduce heat stress.

Where can I find more information about climate change impacts in Lewisham?

You can find more information on the Inner West Council website, the NSW Department of Planning and Environment website, and the CSIRO 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 Lewisham, use our analysis tool.

Analyse a Property in Lewisham →

Check Your flood Risk Now

Check Lewisham's specific flood risk and see how it compares to nearby suburbs. Enter your address for an instant risk assessment.

Free instant previewCSIRO-powered data

Get Your flood Risk Report — A$69

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