Bushfire Risk in Thirroul, NSW: 2026 Assessment
Bushfire Risk Score
4.2/10Thirroul has a moderate bushfire risk due to the presence of bushland areas nearby. Hot, dry conditions and strong winds can increase the likelihood of bushfires spreading towards residential areas.
Key Facts
- Bushfire Risk
- Thirroul has a moderate bushfire risk due to the presence of bushland areas nearby. Hot, dry conditions and strong winds can increase the likelihood of bushfires spreading towards residential areas.
- Trend
- stable
- Suburb
- Thirroul, NSW
- Overall Risk
- Medium
- Postcode
- 2515
- Highest high-risk exposure
- 12.4% of land (bushfire)
Bushfire Risk Analysis
Thirroul, New South Wales, has a thirroul has a moderate bushfire risk due to the presence of bushland areas nearby. hot, dry conditions and strong winds can increase the likelihood of bushfires spreading towards residential areas. bushfire risk profile. Key factors include distance to classified bushland, vegetation type, slope, and historical bushfire activity in the region. The New South Wales fire authority maps bushfire-prone areas and assigns BAL (Bushfire Attack Level) ratings.
Properties on the western side of Thirroul are more exposed to bushfire risk due to their proximity to the Royal National Park.
CSIRO research indicates climate change is extending fire seasons and increasing the number of severe fire weather days across southern and eastern Australia. For Thirroul, this may mean shifts in bushfire risk levels over the coming decades, making property-level BAL assessment increasingly important.
Use ClimateNest for a complete address-level bushfire risk report for Thirroul including BAL zone assessment, evacuation route mapping, and property-specific risk mitigation recommendations.
Thirroul sits within ClimateNest's suburb-level hazard model for bushfire risk. 12.4% of the suburb's land area is mapped in high-risk bushfire zones and 79.3% in moderate-risk zones, based on the national hazard overlay. Exposure at this scale varies street by street, which is why an address-level check matters before you buy or insure a specific property in Thirroul.
Thirroul (postcode 2515) 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 (12.4% of land in high-risk zones), surface flood (6.6% of land in high-risk zones), riverine flood (5.2% of land in high-risk zones). Exposure is not uniform across Thirroul — 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 bushfire near the Royal National Park threatened properties in Thirroul, but was quickly contained.
Adaptation & Mitigation Actions
Upgrade drainage infrastructure
Near-termImprove drainage systems to reduce the risk of flash flooding during heavy rainfall events.
Est. cost: Medium
Strengthen coastal defenses
Near-termInvest in coastal protection measures, such as seawalls and beach nourishment, to mitigate the impacts of sea level rise and coastal erosion.
Est. cost: High
Implement a heatwave management plan
ImmediateDevelop a plan to protect vulnerable populations during heatwaves, including establishing cooling centers and providing public awareness campaigns.
Est. cost: Low
Reduce bushfire risk
Near-termImplement bushfire mitigation measures, such as vegetation management and community education programs, to reduce the risk of bushfires spreading towards residential areas.
Est. cost: Medium
Promote water conservation
Long-termEncourage residents to conserve water through education and incentives to reduce strain on water resources during droughts.
Est. cost: Low
Council & Emergency Services
Explore Thirroul Risk Reports
View other climate risk assessments for Thirroul:
Frequently Asked Questions
Is Thirroul in a bushfire prone area?
Parts of Thirroul may be designated as bushfire prone land. Based on available data, Thirroul has a notable bushfire risk. Check your specific property for BAL ratings through ClimateNest or your local council.
What BAL rating applies to properties in Thirroul?
BAL ratings in Thirroul depend on the property's distance from classified vegetation, vegetation type, and slope. A site-specific assessment under AS 3959 is required to determine the exact BAL rating for any property within the suburb.
Does bushfire risk affect insurance in Thirroul?
Yes, properties in bushfire-prone parts of Thirroul may face higher building insurance premiums. Insurers assess bushfire risk based on BAL rating, fire history, and proximity to bushland. Some insurers may restrict cover in very high-risk locations.
What bushfire mitigation measures help protect homes in Thirroul?
Effective bushfire mitigation includes maintaining cleared asset protection zones, using ember-proof mesh on vents, installing metal gutter guards, using non-combustible building materials, and maintaining defendable space. Consult the New South Wales fire authority for property-specific guidance.
What share of Thirroul is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 12.4% of Thirroul in high-risk zones for bushfire, with a further 79.3% 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 Thirroul Safe from Climate Risk?
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