Is North St Marys, QLD Climate Safe? 2026 Assessment
Climate Safety Score
5.2/10Moderate climate risk — address-specific
Key Facts
- Climate Safety
- Medium
- Flood
- North St Marys faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, potentially worsening flood events.
- Bushfire
- The suburb has a moderate bushfire risk due to the presence of surrounding bushland. Hotter and drier conditions are projected to increase the frequency and intensity of bushfires.
- Heat
- North St Marys is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations, such as the elderly and those with chronic health conditions.
- Storm
- Notable storm risk — tropical cyclones and severe thunderstorms in summer months
- Postcode
- 4650
- Highest high-risk exposure
- 11.6% of land (tropical cyclone)
Climate Safety Analysis
North St Marys in Queensland has an overall climate safety rating of Medium. This multi-hazard assessment combines flood, bushfire, heat, coastal, and storm risk data with climate projections to 2050 from CSIRO and the Bureau of Meteorology.
Key factors affecting North St Marys's climate safety include heat, flood. Each hazard is assessed independently and combined for an overall picture. Australia has warmed by approximately 1.5 °C since 1910, with flow-on effects to fire weather, extreme rainfall, and heatwave frequency.
Climate safety for property in North St Marys is not uniform — it varies by address. Factors such as elevation, distance to waterways, proximity to bushland, and local drainage all influence actual risk at a specific property. Two nearby properties can have materially different risk profiles.
For a complete property-specific climate safety report for North St Marys including address-level hazard mapping, insurance outlook, and adaptation recommendations, use the ClimateNest full analysis tool.
North St Marys (postcode 4650) 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 tropical cyclone (11.6% of land in high-risk zones), riverine flood (10.2% of land in high-risk zones), bushfire (8.7% of land in high-risk zones). Exposure is not uniform across North St Marys — 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
Localized flooding in parts of Penrith LGA due to heavy rainfall.
Bushfires in the Blue Mountains region caused smoke haze and air quality concerns in Western Sydney.
Prolonged heatwave conditions across NSW, impacting vulnerable populations.
Major flooding in the Penrith region affected low-lying areas near South Creek.
Adaptation & Mitigation Actions
Improve drainage infrastructure
Near-termUpgrade drainage systems to reduce flood risk during heavy rainfall events.
Est. cost: Medium
Implement heatwave early warning system
ImmediateDevelop a system to alert residents of impending heatwaves and provide guidance on how to stay safe.
Est. cost: Low
Bushfire hazard reduction
Near-termConduct regular bushfire hazard reduction activities in areas surrounding the suburb.
Est. cost: Medium
Promote water conservation
Long-termEncourage residents to conserve water to reduce strain on water resources during droughts.
Est. cost: Low
Community education programs
Near-termRun community workshops on preparing for climate-related disasters.
Est. cost: Low
Council & Emergency Services
Explore North St Marys Risk Reports
View other climate risk assessments for North St Marys:
Frequently Asked Questions
Is North St Marys safe from climate change?
No location in Australia is entirely immune to climate change impacts. North St Marys has an overall Medium climate risk rating. Understanding the specific hazards at your property address — not just the suburb average — provides the most reliable risk picture.
Which climate hazard poses the biggest risk in North St Marys?
The dominant hazard for North St Marys depends on geography and local environment. Proximity to waterways elevates flood risk, while proximity to bushland increases bushfire risk. ClimateNest's multi-hazard analysis identifies the highest-risk hazards for any specific address.
How does North St Marys compare to nearby suburbs for climate safety?
Nearby suburbs may have different climate risk profiles depending on elevation, vegetation cover, drainage patterns, and land use. ClimateNest allows comparison of climate safety scores across Queensland suburbs.
Should I be concerned about buying property in North St Marys?
Climate risk should be one factor in your decision, alongside price, location, and amenity. An informed buyer understands the specific risks at a property address and factors insurance costs and climate projections into their assessment of long-term value.
What climate projections should I know for North St Marys?
Key projections for Queensland from CSIRO include increased average temperatures, more frequent hot days, changes in rainfall seasonality, longer fire seasons, and potential increases in extreme rainfall intensity. These trends inform the long-term outlook for North St Marys.
What share of North St Marys is exposed to high tropical cyclone risk?
ClimateNest's hazard overlay maps 11.6% of North St Marys in high-risk zones for tropical cyclone, with a further 71.8% 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 North St Marys Safe from Climate Risk?
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