Heat Risk in South Fremantle, WA: 2026 Assessment
Heat Risk Score
7.1/10South Fremantle experiences a high heat risk, with increasing average temperatures and more frequent heatwave events. This poses a significant threat to vulnerable populations.
Key Facts
- Heat Risk
- South Fremantle experiences a high heat risk, with increasing average temperatures and more frequent heatwave events. This poses a significant threat to vulnerable populations.
- Trend
- increasing
- Suburb
- South Fremantle, WA
- Overall Risk
- Medium
- Postcode
- 6162
- Highest high-risk exposure
- 14.8% of land (bushfire)
Heat Risk Analysis
South Fremantle in Western Australia faces elevated extreme heat risk. The Bureau of Meteorology (BOM) reports that Australia's average temperature has increased by approximately 1.5 °C since 1910, with the frequency of extreme heat days rising across most regions.
The urban heat island (UHI) effect can make built-up areas of South Fremantle warmer than surrounding rural areas, particularly on summer nights. Dark roof materials, limited tree canopy cover, and heat-absorbing surfaces contribute to localised heat stress that varies by property.
The number of days exceeding 35°C is projected to increase significantly in the coming decades.
Get an address-level heat risk assessment from ClimateNest for South Fremantle including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
South Fremantle (postcode 6162) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are bushfire (14.8% of land in high-risk zones), surface flood (11.8% of land in high-risk zones), riverine flood (9.3% of land in high-risk zones). Exposure is not uniform across South Fremantle — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.
Local Hazard Evidence
Historical Events
A prolonged heatwave resulted in increased hospital admissions and strain on infrastructure.
Adaptation & Mitigation Actions
Coastal Protection Measures
ImmediateImplement coastal protection measures, such as seawalls and beach nourishment, to mitigate the impacts of sea level rise and erosion.
Est. cost: High
Urban Greening Initiatives
Near-termIncrease urban greening to reduce the urban heat island effect and provide shade during heatwaves.
Est. cost: Medium
Community Awareness Programs
ImmediateDevelop and implement community awareness programs to educate residents about climate risks and adaptation strategies.
Est. cost: Low
Improved Drainage Infrastructure
Near-termUpgrade drainage infrastructure to manage increased rainfall intensity and reduce the risk of flooding.
Est. cost: Medium
Heatwave Preparedness Plans
ImmediateDevelop heatwave preparedness plans for vulnerable populations, including cooling centers and outreach programs.
Est. cost: Low
Council & Emergency Services
Explore South Fremantle Risk Reports
View other climate risk assessments for South Fremantle:
Frequently Asked Questions
How hot does South Fremantle get in summer?
South Fremantle in Western Australia experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near South Fremantle. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in South Fremantle?
Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for Western Australia. Continued warming is likely through 2050 under all emissions scenarios.
How does heat affect energy costs for South Fremantle properties?
Higher temperatures increase cooling demand, which raises electricity costs. ClimateNest provides energy cost projections based on your property's specific exposure to extreme heat days in South Fremantle and the performance of your building envelope.
What heat mitigation measures work best in South Fremantle?
Effective heat mitigation includes light-coloured roofing (cool roofs), ceiling and wall insulation, double-glazed windows, external shading, cross-ventilation design, and increasing tree canopy around the property. These measures reduce indoor temperatures and cooling costs.
What share of South Fremantle is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 14.8% of South Fremantle in high-risk zones for bushfire, with a further 58.4% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.
Is South Fremantle Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for South Fremantle, Western Australia, covering flood, bushfire, sea level rise and more.
What A$69 could save you from
*Industry sources: ICA, APRA, RBA
Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections