Plan the day around the hottest hours, not around the activities.
On a hot day the useful free activities fall into three blocks: the early morning and evening when outside is still possible, the middle of the day when it is not, and the option of leaving the house entirely for somewhere that is cooler and costs nothing. Sorting by time of day matters more than the activity list, because the same house is a different place at 8am and at 3pm.
Everything below is free and uses what an ordinary house already has.
Use the cool hours first
Get outside before it heats up. The backyard, the park, a bike ride and the walk to the shops are all still available early, and the children come back inside with some energy spent. Backyard activities that cost nothing covers that first hour.
Do the physical indoor things early too. Obstacle courses, hallway races and dance competitions are far more bearable at nine in the morning than at two in the afternoon, when a house without air conditioning has already climbed.
Close the house before it gets hot, not after. Blinds and curtains down on the sunny side, windows shut once the outside air is warmer than the inside air. This is the single free action that changes the afternoon most, and why the house is still hot at night explains what is going on when it does not seem to work.
The middle of the day: water and ice
Water is the one category of activity that a hot day makes better rather than worse, and it does not need a pool.
Water play on a towel-covered floor in the bathroom, laundry or on a tiled area. A washing-up tub, cups, spoons, a colander and a few plastic toys. This works for toddlers and for primary-aged children who are old enough to be given a task, such as washing every toy in the box.
A bath in the middle of the day, treated as an activity rather than a chore. Cold-ish water, bath toys, and it can go for a long time.
Ice as an activity. Freeze small toys in a container of water overnight and hand over a spoon and a cup of warm water to excavate them. Ice cubes with a drop of food colouring on a tray. An ice cube race down a tilted baking tray. A frozen cup of fruit or diluted cordial as the reward at the end.
Washing things. The dog, the car if it is under shade and water restrictions allow, the outdoor furniture, the bikes. Children who will not tidy a bedroom will wash a car for an hour.
Supervise water play with young children at all times, including shallow tubs and the bath, and empty containers when the activity ends.
The middle of the day: quiet and low effort
The afternoon is for the activities that produce the least heat and the least conflict.
A fort with the blinds down and a torch. The darkened room is cooler and the fort is the best long indoor activity for primary-aged children, as covered in indoor activities for primary school kids.
Reading aloud on the floor, which is the coolest part of any room.
A long jigsaw, a card game tournament or a board game with a scoreboard on the fridge that runs across the whole afternoon.
Drawing challenges and a comic made from folded paper. Quiet, seated and endless.
Cooking that does not involve the oven. Fruit skewers, a no-bake slice, homemade icy poles from juice or yoghurt in a mould or an ice cube tray, or a smoothie. Turning the oven on is the one kitchen activity to skip on a hot day.
A defined block of screen time, agreed in advance, with a clear end. A film as an event, with the blinds down and something cold to eat, is a legitimate use of the hottest two hours and is different from a screen that expands because nobody decided anything.
A slow rest. Younger children and quite a few older ones will sleep in the heat if the room is dark. It is not a failure to plan for that.
When the house is the problem: free places to go
A house that cannot be kept cool makes the afternoon miserable regardless of the activity list. Leaving is a free activity in its own right.
The public library. Air conditioned, free, with children’s areas, and many run free holiday programs and story sessions. Check the local council or library website for the session times, because they book out.
The shopping centre, walked rather than shopped. Play areas, a lap of the centre, a seat near the fountain, and the car park is usually shaded.
State galleries and museums with free general entry. Not every venue is free and not every exhibition is, so check the venue website before driving.
Community centres and council buildings that are opened as cool spaces during declared heatwaves. Several councils and state health departments publish a list during a heat event.
An air-conditioned friend or relative. A shared afternoon is easier on both households.
Anywhere the car is involved, never leave a child or a pet in it, even briefly, and check the back seat every time.
Pets on the same day
The dog needs the same plan. Walks move to early and late, footpaths are checked with a hand before walking on them, water bowls are refilled and moved into shade, and a wet towel or a paddling tub is offered rather than forced. Cats and small animals need shade, water and a cool floor, and cages and hutches need to be moved out of any sun that arrives during the day. The state health and RSPCA heat advice covers the warning signs to watch for; a pet that seems unwell in the heat is a vet call, not a wait-and-see.
The evening: reopen the house
Once the outside air is cooler than the inside air, open everything and get the children back out. Water balloons, the sprinkler if restrictions allow, a walk, or the backyard activities that were skipped at midday.
Cool showers before bed and the coolest room in the house for sleeping, which is often not the bedroom.
When it is a run of hot days
One long project that continues across days does more for a hot week than a new list every afternoon, and the same is true of the daily plan. A free week of school holidays, day by day sets the structure, and free things to do with kids these school holidays covers the free programs that are worth booking ahead.
Lower the standard. A heat week is not the week to hold the line on screens, tidiness or bedtimes, and a household that lets some of it go ends the week better than one that fought all five days.
Follow the official heat advice for the state. The Bureau of Meteorology heatwave service says when a heatwave is coming, and each state health department publishes what to do about it for babies, children, older relatives and pets. That advice, not an activity list, is the source for anything to do with health.
Next: backyard activities that cost nothing covers the cool hours at either end of the day, and indoor activities for primary school kids covers the full indoor list for a wet day rather than a hot one.
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