What the mapping shows for Trevallyn
Part of Trevallyn is mapped as subject to coastal inundation.
2.8% of Trevallyn is mapped as subject to coastal inundation (coastal inundation hazard band, including 1% AEP storm tide at 2100)
10.6% of Trevallyn is mapped as subject to coastal erosion (coastal erosion hazard band mapped for the Tasmanian planning system)
Tasmanian Coastal Inundation Hazard Bands (20161201), State of Tasmania (Department of Premier and Cabinet), Creative Commons Attribution 4.0, retrieved 2026-10-23
This is a share of the suburb's land area from a published state dataset, not an assessment of any property. A ClimateNest report scores the individual address across eight hazards, with insurance and value projections to 2050.
Check an address in Trevallyn →Heat Risk in Trevallyn, TAS: 2026 Assessment
2.8% of Trevallyn is mapped as subject to coastal inundation (coastal inundation hazard band, including 1% AEP storm tide at 2100)
That figure covers the suburb. Check whether your address is inside it - address-level, sourced, A$49.
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Heat Risk Score
Not assessedTrevallyn is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations and infrastructure.
Key Facts
- Heat Risk
- Trevallyn is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations and infrastructure.
- Trend
- increasing
- Suburb
- Trevallyn, TAS
- Overall Risk
- Medium
- Postcode
- 7250
Heat Risk Analysis
Trevallyn in Tasmania faces location-specific 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 Trevallyn 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.
Heatwaves are becoming more frequent, with temperatures exceeding 30°C for several days.
Get an address-level heat risk assessment from ClimateNest for Trevallyn including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
ClimateNest assesses hazards at the address rather than the suburb, because exposure varies street by street within Trevallyn. An address-level check is what tells you about a specific property before you buy, sell or insure it.
Local Hazard Evidence
Historical Events
A prolonged heatwave affected Tasmania, with record temperatures recorded in Launceston.
Adaptation & Mitigation Actions
Improve Flood Defenses
Near-termInvest in infrastructure to mitigate flood risk, such as improved drainage systems and levees.
Est. cost: High
Enhance Bushfire Preparedness
Near-termImplement stricter building codes in bushfire-prone areas and promote community education on bushfire safety.
Est. cost: Medium
Develop Heat Action Plan
ImmediateCreate a heat action plan to protect vulnerable populations during heatwaves, including cooling centers and public awareness campaigns.
Est. cost: Low
Promote Water Conservation
Long-termEncourage water conservation measures to reduce strain on water resources during periods of drought and heat.
Est. cost: Low
Council & Emergency Services
Explore Trevallyn Risk Reports
View other climate risk assessments for Trevallyn:
Frequently Asked Questions
How hot does Trevallyn get in summer?
Trevallyn in Tasmania experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near Trevallyn. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in Trevallyn?
Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for Tasmania. Continued warming is likely through 2050 under all emissions scenarios.
How does heat affect energy costs for Trevallyn 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 Trevallyn and the performance of your building envelope.
What heat mitigation measures work best in Trevallyn?
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.
Is Trevallyn Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Trevallyn, Tasmania, covering flood, bushfire, sea level rise and more.
What A$49 could save you from
*Industry sources: ICA, APRA, RBA
Full report from A$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections