It's 35 degrees at 10pm, the house has been baking all day, and the night ahead looks like lying very still and negotiating with the ceiling fan. Australian heatwaves are a specific kind of sleep crisis — so here's the playbook, in the order that actually matters.
Fight the house before you fight the bed
Your bedroom's overnight temperature was mostly decided by 4pm. Blinds and curtains closed on the sun side all day, windows shut while it's hotter outside than in — then the moment the outside temperature drops below inside (usually well after sunset), open everything and get air moving through. A fan in a window blowing hot air out of the room works better than one pushing warm air around it.
Cool the person, not just the room
A lukewarm (not cold) shower before bed helps your body dump heat — icy water backfires by making your body conserve warmth. A cold water bottle or ice pack on pulse points — wrists, neck, feet — buys real relief. Your feet are your body's radiators: keep them outside the sheet.
Strip the bed back to breathable
Heatwave nights expose every synthetic in your bedding. Polyester sheets and pillowcases trap heat and moisture; natural and plant-based fibres breathe. Ditch the doona entirely for a sheet or a light cotton blanket — most people sleep better under something light than under nothing.
Wear less, but wear smart
Counterintuitive but true: light, breathable sleepwear often beats sleeping bare, because fabric that wicks sweat off your skin helps it evaporate instead of pooling on the sheets beneath you. The catch is it has to be the right fabric — a moisture-wicking fibre like TENCEL™ Modal, not a polyester 'silky' set that turns into cling wrap. It's the same absorb-and-release logic from our night sweats buyer's guide, and it's precisely what our Short Sleeve PJ Set was cut for.
And the acceptance portion
Skip the evening beers (alcohol runs you hotter), park the intense workout, eat lighter and earlier, and lower your expectations — heatwave sleep is about damage control, not perfection. Your body does adapt somewhat across a hot spell; the first night is usually the worst. If you're overheating at night even when the weather isn't extreme, that's a different problem with different fixes — we've covered those six culprits here.
