Summer Decor Ideas for Small Apartments (That Also Keep It Cooler)

Summer in a small apartment is a different problem from summer in a house. Heat builds up in a small space fast, there is nowhere to escape to, and by August the whole place smells faintly of warm building.

So summer decorating here is only half about looks. The other half is keeping the apartment liveable — cooler, airier, and lighter to look at as well as to sit in.

Here’s the summer version of a small apartment: what to swap, how to keep the heat out, and how to use every inch of outdoor space you have.

Start With the Sun, Not the Cushions

Most apartment heat arrives through the windows. A south or west-facing window in July does more to your indoor temperature than anything else in the room.

Close the curtains on the sunny side during the day. It feels wrong to shut out summer light, but it is the single most effective thing you can do, and you open everything again in the evening.

Use heavier panels only where the sun hits. Blackout or thermal-lined curtains on the one hot window, light linen everywhere else. Like these blackout thermal curtains.

Window film helps on a window you cannot cover. It cuts glare and some heat, and it comes off when you leave. Like this removable window film.

Hang panels high and wide so they clear the glass completely when open. Measurements in how to choose and hang curtains.

Move Air Through the Apartment

A cross breeze beats a powerful fan. Open windows on two different sides of the apartment, and prop internal doors so the air has a path.

Point a fan out of a window, not into the room, in the evening. Pushing hot air out and pulling cooler air in through another window cools a small apartment far faster than stirring the hot air you already have.

Flush the heat at night. Open everything once the outside air is cooler than the inside air, then close up in the morning before it climbs again.

Do not block vents or radiators with furniture — in many buildings the same ducts handle cooling.

If you use a portable air conditioner, plug it straight into a wall outlet. Not an extension lead, not a power strip. Air conditioners draw a lot of current and this is a genuine fire-safety point. Check your lease too, since many buildings restrict window units.

Swap the Textiles Down a Weight

Swap out heavy layers for breathable textures. This grid features five simple textile updates for a fresh summer home, from light blankets to airy curtains and washable rugs.[/caption]

Every soft thing in the room holds heat. Summer swapping is mostly about taking weight out.

• Bedding: swap the duvet for a light cotton blanket or just a cover. This is the change you will feel most.
• Cushion covers: cotton and linen instead of velvet and chunky knit. Like these cotton cushion covers.
• Curtains: linen where the sun does not hit. Like these linen curtain panels.
• Rugs: a flat-weave cotton rug, or roll the big wool one up for three months.
• Runners: a washable cotton runner in the kitchen and hallway, because summer floors see bare feet and spilled drinks. Like this washable cotton runner.

Wash and store what you take off. Same rule as every seasonal swap — one bin, clean, compressed, labelled.

Make the Room Look Cooler Too

Visual temperature is real. A room full of dark, heavy, layered things reads as hot even at the same actual temperature.

Clear surfaces. Fewer objects out, more empty space. In summer, clutter reads as stuffy.

Bring in glass, white ceramic and pale wood. A glass jug, a white bowl, a rattan tray — all of it reads as cool and costs almost nothing. Like this rattan tray.

Pull the furniture slightly away from the walls if you can. Even an inch of gap makes the room breathe visually, and it improves air movement.

Swap dark art for something lighter on one wall, if you have it. Or simply take one thing down — empty wall is cooling.

Use Every Inch of Outdoor Space

In summer, a balcony is a second room and should be furnished like one. A folding table and two chairs, and you have doubled your living space for the season. Like this folding bistro set.

Plants go on the railing or the wall, not the floor. Check the building rules first — many buildings ban anything mounted outside a railing. Like this railing planter.

Add light so it works after dark. Solar or battery string lights turn a balcony into the best seat in the apartment at 9pm. Like these string lights.

Do not use a fire escape as a balcony. Not for furniture, not for plants, not for storage. It is an escape route and blocking it is both illegal in most places and genuinely dangerous.

Full setup guide in small balcony ideas.

Summer Entertaining Without a Garden

Summer is the season people actually come over. A small apartment can handle it with a bit of staging.

Serve from one surface and keep it off the kitchen counter. A cart, a console or a folded table by the window becomes the drinks station and keeps traffic out of the kitchen.

Use trays as portable tables. Two trays let people eat on laps without a plate of pasta ending up on the sofa.

Move seating into a circle before people arrive, not after. Circles hold conversation; a line of chairs against the wall does not.

The whole playbook is in how to host a party in a small apartment.

Damp, Smells and Bugs

Summer humidity makes a small apartment smell. Warm air holds moisture, and moisture holds every cooking smell from the last week.

Ventilate every day, run the bathroom fan longer than feels necessary, and dry laundry near an open window rather than in a closed room.

A small dehumidifier helps in a genuinely damp apartment, particularly in a windowless bathroom or a basement flat. Like these blackout thermal curtains.0

Empty the kitchen bin daily in hot weather and keep charcoal or bamboo bags in the bin cupboard rather than spraying over the smell. Like these blackout thermal curtains.1

Screens on the windows you leave open. Removable mesh screens with a frame are cheap and keep mosquitoes out while the night air comes in.

More on the smell side of this in how to make a small apartment smell good.

Light the Evenings Properly

Summer evenings are long, so the apartment needs less overhead light and more low light. Turn off the ceiling fitting entirely for a couple of hours.

Use flameless candles if you like the look — particularly on a balcony, where real flames plus fabric plus wind is a bad combination. Like these blackout thermal curtains.2

Keep one lamp near the window so the room does not go dark before the sky does.

Summer in a Small Bedroom

A small bedroom is the hardest room to keep cool, because it has one window, a large soft object in the middle of it, and you are in there for eight hours with the door shut.

Change the sheets to cotton or linen. Percale cotton and washed linen both breathe far better than microfibre or jersey, which trap heat against you all night.

Ditch the mattress topper for the summer if you have a memory foam one. They insulate brilliantly, which is exactly the problem in July.

Keep the bedroom curtains shut all day. A bedroom that bakes from 2pm is still warm at midnight, because the walls and the mattress hold the heat.

Put the fan low and aim it across the bed, not at your head. Air moving over skin is what cools you; a fan pointed at your face just dries your eyes out.

Move the laundry pile out. Every pile of fabric in a small bedroom is insulation, and in summer it is also the thing that makes the room smell closed up. See laundry in a small apartment for where it can actually live.

Small Summer Touches Worth Doing

• One bowl of real fruit on the counter. Free decor, and it is the most summer-looking thing in any kitchen.
• A jug of water in the fridge instead of bottles. Takes less space and you drink more.
• Swap one piece of art for something lighter or more coastal, if you have a spare frame.
• Put a cotton throw over a dark sofa. Instantly lighter, and it protects the upholstery from sun cream and bare legs.
• Move one chair to face the window. A seat with a view of the outside is the cheapest summer upgrade in the apartment.

What to Put Away Until Autumn

• The heavy throws and chunky knits. All of them, not just some.
• The wool rug, if you have anywhere to keep it rolled.
• Dark candles and heavy scents. Fresh, citrus and herbal read as summer; cinnamon does not.
• Anything cluttering a windowsill you now want open.
• Half the cushions. Seriously — a sofa with six cushions is a sofa nobody wants to sit on in July.

The cosy version of all this comes back in autumn — see how to make a small apartment feel cosy when the time comes.

Your Turn

Tonight, do two things: swap the duvet for something lighter, and work out which of your windows is the hot one. Then close that window’s curtains tomorrow before you leave the house.

That is the whole of summer apartment living in two moves. Everything else — linen cushions, the balcony table, the string lights — is the fun part you can add over a few weekends.

Which window is doing the damage in your place? FYI, it is almost always the west-facing one, and the fix costs less than a fan. 🙂