Heat Risk in St Huberts Island, NSW: 2026 Assessment
Heat Risk Score
5.5/10St Huberts Island experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This can impact vulnerable populations and infrastructure.
Key Facts
- Heat Risk
- St Huberts Island experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This can impact vulnerable populations and infrastructure.
- Trend
- increasing
- Suburb
- St Huberts Island, NSW
- Overall Risk
- Medium
- Postcode
- 2257
- Highest high-risk exposure
- 14% of land (bushfire)
Heat Risk Analysis
St Huberts Island in New South Wales 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 St Huberts Island 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.
Average January maximum temperatures are expected to increase in the coming decades.
Get an address-level heat risk assessment from ClimateNest for St Huberts Island including cooling cost estimates, heatwave vulnerability scoring, and adaptation recommendations tailored to your property.
St Huberts Island (postcode 2257) 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% of land in high-risk zones), surface flood (13.1% of land in high-risk zones), riverine flood (9.5% of land in high-risk zones). Exposure is not uniform across St Huberts Island — 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
Adaptation & Mitigation Actions
Raise homes and infrastructure
Near-termElevate buildings above projected flood levels to reduce the risk of water damage.
Est. cost: High
Strengthen coastal defenses
ImmediateImplement coastal protection measures such as seawalls and beach nourishment to mitigate erosion.
Est. cost: Very High
Improve drainage infrastructure
Near-termUpgrade drainage systems to handle increased rainfall and reduce the risk of flooding.
Est. cost: Medium
Develop a community emergency plan
ImmediateCreate a plan to prepare for and respond to extreme weather events, including evacuation procedures and communication strategies.
Est. cost: Low
Install water tanks
Long-termInstall water tanks to capture rainwater and reduce reliance on mains water during droughts.
Est. cost: Medium
Council & Emergency Services
Explore St Huberts Island Risk Reports
View other climate risk assessments for St Huberts Island:
Frequently Asked Questions
How hot does St Huberts Island get in summer?
St Huberts Island in New South Wales experiences summer temperatures consistent with the regional climate. BOM publishes historical temperature data for weather stations near St Huberts Island. Get a property-specific heat exposure assessment with projected cooling costs from ClimateNest.
Is extreme heat increasing in St Huberts Island?
Australia-wide, extreme heat events have become more frequent since the mid-20th century, and this trend is consistent with CSIRO climate projections for New South Wales. Continued warming is likely through 2050 under all emissions scenarios.
How does heat affect energy costs for St Huberts Island 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 St Huberts Island and the performance of your building envelope.
What heat mitigation measures work best in St Huberts Island?
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 St Huberts Island is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 14% of St Huberts Island in high-risk zones for bushfire, with a further 63.1% 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 St Huberts Island Safe from Climate Risk?
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