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Tropical Nights

A simple, credible Heat Stress Indicator for Property Searches

Metric
Nights above 25°C
Resolution
2.2km
Released
2026

Intro

Overheating is Driven by Nights not Days

Buildings depend on cool nights to shed heat that has been built up during the day. If they don't then tropical nights that follow will only magnify the heat the following day. This feedback loop is at its most extreme in urban areas with larger expanses of concrete, tarmac and is felt by residents in dense occupancy areas with airtight housing.

This then reduces sleep comfort and quality and can lead to serious health issues among the vulnerable members of the population.

Our data identifies areas where the heat impacts could be there most extreme and that could pose a risk to those buying property.






Need

Why this matters to Clients

For Homebuyers:

- Health complications and co-morbidities.

- Impacts the quiet enjoyment of the home.

- significant retrofit costs to mitigate risks.

- can impact on property value or re-sale.


For Commercial Property:

- High impact on worker productivity, absenteeism and cost to employers.

- Wider impacts to biodiversity, supply chains, infrastructure and agriculture.

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