Heat Risk in Thomson, VIC: 2026 Assessment
Heat Risk Score
7.0/10Thomson is highly susceptible to heatwaves, with a significant number of days exceeding 35°C projected.
Key Facts
- Heat Risk
- Thomson is highly susceptible to heatwaves, with a significant number of days exceeding 35°C projected.
- Trend
- increasing
- Suburb
- Thomson, VIC
- Overall Risk
- Medium
- Postcode
- 3219
- Highest high-risk exposure
- 11.9% of land (bushfire)
Heat Risk Analysis
Thomson in Victoria 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 Thomson 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.
Projected to increase significantly, with more frequent days over 40°C.
Get an address-level heat risk assessment from ClimateNest for Thomson including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
Thomson (postcode 3219) 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 (11.9% of land in high-risk zones), surface flood (7.4% of land in high-risk zones), riverine flood (5.1% of land in high-risk zones). Exposure is not uniform across Thomson — 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 period of extreme heat affected Victoria, including the Geelong region, leading to increased demand on power grids and health services.
Victoria experienced a severe heatwave, with record-breaking temperatures causing widespread health impacts and infrastructure strain. Thomson would have been affected.
Adaptation & Mitigation Actions
Enhance Urban Green Infrastructure
Near-termIncrease tree canopy cover and green spaces to mitigate the urban heat island effect and improve stormwater management.
Est. cost: $$
Upgrade Flood Defences and Drainage
ImmediateInvest in upgrading and maintaining flood levees, stormwater drainage systems, and permeable surfaces to better manage increased rainfall intensity.
Est. cost: $$$
Promote Heat-Resilient Building Design
Near-termEncourage or mandate building designs that incorporate passive cooling, high-performance insulation, and reflective roofing materials.
Est. cost: $$
Develop Community Heatwave Response Plan
ImmediateEstablish clear communication channels and designated cooling centres for vulnerable residents during extreme heat events.
Est. cost: $
Review and Update Emergency Management Plans
Near-termEnsure local emergency services and council plans adequately address the projected increases in flood and heat risks.
Est. cost: $
Council & Emergency Services
Explore Thomson Risk Reports
View other climate risk assessments for Thomson:
Frequently Asked Questions
How hot does Thomson get in summer?
Thomson in Victoria experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Thomson. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Thomson?
Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for Victoria. Continued warming is likely through 2050 under all emissions scenarios.
How does heat affect energy costs for Thomson 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 Thomson and the performance of your building envelope.
What heat mitigation measures work best in Thomson?
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 Thomson is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 11.9% of Thomson in high-risk zones for bushfire, with a further 74% 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 Thomson Safe from Climate Risk?
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