Draft. These pages were imported from the ARC Technical Criteria document (16 April 2026) and have not yet been reviewed in this format. Several thresholds are still being settled and are flagged on the pages concerned.

Temperatures of transient spaces during heatwaves

Spaces people need to use for more than an hour each day - kitchens, bathrooms and corridors - should not exceed the human limits for temperature.

These are spaces that people need to use for more than an hour each day, like kitchens, bathrooms and corridors. They correspond broadly to zone 3.

These spaces should not exceed the human limits for temperature.

• In a hot dry climate, the limit is exceeding an air temperature of 40 °C.
• For hot humid climates, a wet bulb temperature of 32-34 °C is the limit of human capacity.

For what dry bulb and wet bulb temperature mean, see measuring thermal comfort. For the thresholds that apply to zones 1 and 2, see success criteria.

Range not settled

The hot humid figure is given in the source as a range, 32-34 °C, rather than a single number. Confirm it with ARC before relying on it.

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Source: ARC Technical Criteria - Temperatures of transient spaces during heatwaves
Reference · confidence medium · Imported 2026-08-29, not yet reviewed · next review 2026-11-29
Tags: criteria, thresholds, zones, heatwaves
Citation key: transient-space-temperatures