What Should a 3–6 Month Old Wear to Bed at 22°C?

Why this combination works at 22°C

22°C sits comfortably in the middle of the recommended sleep range — not the cool end that demands heavy insulation, not the warm end where you're stripping back to a short-sleeve bodysuit. The 1.0 TOG bag is designed for this zone. For a 3–6 month old, it pairs with a long-sleeve cotton bodysuit: that combination keeps core temperature stable without working against the room.

At this age, temperature regulation is more developed than in the newborn weeks, but 3–6 month olds still can't shift position or kick off a cover that's too warm. A 1.0 TOG bag gives enough insulation to handle mild room variation — if the room drifts up to 23°C or down to 20°C overnight, you won't need to intervene.

The swaddle window is closing at this age. Many babies show rolling signs by 4–5 months, which means swaddling is on borrowed time. If your baby isn't rolling yet, an arms-free swaddle at 22°C is appropriate — it sits in the same warmth range as the 1.0 TOG bag with a bodysuit. Once any rolling signs appear, switch to a fitted sleeping bag immediately. A bag that moves with the baby is safer than any swaddle once rolling begins.

Signs you've got it right (or wrong)

At 22°C, overheating is the more likely problem than chilling. Check the chest or back of the neck after 20–30 minutes: warm and dry is the goal. Damp hair around the hairline, flushed cheeks, or rapid breathing mean the room is on the warm side — try a short-sleeve bodysuit under the 1.0 TOG bag on the next sleep and check again. Hands and feet feel cooler than the torso in any well-regulated baby, so don't use those as your guide.

If your home is in coastal Queensland, spring and autumn humidity can make the touch test feel warmer than the thermometer reads. A room at 22°C with 65–70% humidity is effectively warmer than 22°C at 40% humidity — the body's evaporative cooling is less efficient. Trust the thermometer alongside the touch test, and if in doubt, opt for the lighter layer.

Layering for 22°C in an Australian home

In concrete terms: a long-sleeve cotton bodysuit under a 1.0 TOG sleeping bag. Cotton and bamboo breathe better than polyester at 22°C — worth checking labels if you're buying new. The ergoPouch 1.0 TOG sleeping bag, the Love to Dream Swaddle UP 1.0 TOG, or a Bonds cotton bodysuit paired with a Bubba Blue 1.0 TOG bag are standard options in Australian stores.

In Brisbane, the Sunshine Coast, and other subtropical areas in autumn and spring, bedtime temperatures of 21–23°C are common, and air conditioning is often set to a mild 22–23°C overnight. That thermostat setting makes the room predictable: the 1.0 TOG combination works from bedtime through to morning without adjustment. If the aircon is off or on a timer, check the room temperature at the first night feed — subtropical nights can hold steady or creep up toward midnight, and an uncooled room at 11pm in April can still be 24°C.

When room temperature shifts overnight

Brisbane and Sunshine Coast autumn nights typically hold steady — 22°C at bedtime in April or May usually means 21–22°C by dawn, particularly in modern brick or concrete construction that retains warmth. The 1.0 TOG combination is well suited to this stable overnight pattern.

Sydney spring is a different story. A 22°C bedtime in the inner west, Hawkesbury region, or northern suburbs can drop to 17–18°C by 4am as cold air drains into valley suburbs and the overnight south-westerly kicks in. At 17–18°C, a 1.0 TOG bag and bodysuit is getting close to light. It's worth checking the room thermometer at the first night feed during the first week or two. If the room has dropped to 18°C or below, adding a footed sleepsuit under the bag for the remaining hours is the right call.

Frequently asked questions

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• What a 3–6 month old should wear at 23°C