Claire Sleep Lab2026-02-281 min read

Best Cooling Mattress in Australia: Beat the Heat While You Sleep

Australian summers push bedroom temperatures above optimal sleep range. Cooling mattresses use gel foam, graphite infusion, and airflow design to regulate temperature. Claire compares cooling options across 16 retailers.

Why Temperature Wrecks Your Sleep

Your body temperature drops 1-2 degrees Celsius as you fall asleep. This thermoregulation is essential for entering deep sleep and REM stages. When your mattress traps heat, it disrupts this natural cooling.

In Australia, summer night temperatures in Sydney, Melbourne, Brisbane, and Perth regularly exceed 25 degrees Celsius. Combined with a heat-retaining mattress, bedroom temperatures can push well above the optimal 18-22 degree range.

How Mattresses Trap Heat

Memory foam is the primary culprit. Traditional memory foam is dense with a closed-cell structure that restricts airflow.

Thick pillow tops with synthetic fibres can also retain heat.

Cooling Technologies That Work

Gel-infused memory foam: Gel beads absorb and distribute heat. Most common cooling technology.

Graphite or copper infusion: Higher thermal conductivity than gel. Found in mid-range to premium mattresses.

Open-cell foam: Allows air to circulate through the foam, unlike closed-cell memory foam.

Pocket spring airflow: Hybrid mattresses have natural air channels between springs. One of the most effective cooling mechanisms.

Phase-change covers: Absorb heat when warm, release when cool. Most effective in the first 30-60 minutes.

Best Types for Hot Sleepers

Hybrid (pocket spring + foam): Best overall choice for Australian conditions. Air circulates through the spring layer.

Latex: Natural open-cell structure, does not retain heat like memory foam.

Innerspring with comfort layer: Sleeps the coolest of all types due to maximum airflow.

Practical Cooling Tips

Bed base: Use a slatted base for airflow underneath.

Sheets: Cotton or bamboo breathe better than polyester.

Protector: Choose breathable. Cheap waterproof versions trap heat.

How Claire Finds Cool Sleepers

When you mention heat or cooling, Claire boosts hybrid and latex mattresses with specific cooling technologies and deprioritises all-foam without cooling features.

This content is educational only. If night sweats are chronic, consult a healthcare provider.

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