Seasonal Living in Japan: How to Prepare Your Apartment for Summer and Winter

Living in Japan means embracing its dramatic seasonal shifts—hot, humid summers and cold, dry winters. If you’ve ever wondered how to keep your apartment cool in summer or ways to keep your apartment warm in winter, you’re not alone. Japanese apartments often lack central heating and insulation, so a little preparation goes a long way. Let’s dive into practical, stylish, and budget-friendly tips to make your home feel comfortable all year round.

Summer in Japan – How to Stay Cool and Beat the Humidity

In July, the cicadas are singing, and the air often feels like a warm blanket. Japanese summers start with the rainy season (tsuyu) in June and stretch until September, bringing temperatures above 30°C (86°F) and humidity that can hit 80% or more. To cool down the house, we have to lowering the temperature and managing moisture and airflow at the same time.

Lifestyle Tips for a Cool, Fresh Apartment

Switch to Dehumidification Mode

Your air conditioner is not only cooling down the room, but also your secret weapon against humidity. Use the dry mode to keep indoor humidity around 50–60%, which helps prevent mold and that sticky feeling.

Create a Ventilation Ritual

Open your windows for 10 minutes, two or three times a day. It’s a simple habit that refreshes your space and keeps mold from creeping into bathrooms, kitchens, and window corners.

Boost Cooling Efficiency

• Clean your AC filter monthly, your wallet will thank you with 10–15% lower electricity bills.
• Hang blackout curtains or blinds to block heat, reducing indoor temperature by up to 30%.
• Add an air circulator to spread cool air evenly. It’s a small investment that makes a big difference.

Keep Bugs at Bay

Summer in Japan means cockroaches and mosquitoes. Apply insect-repellent tape or use discreet pesticides around door gaps and drains for peace of mind.

Winter in Japan – How to Stay Warm and Cozy

Fast forward to December: the air is crisp, Mount Fuji is dusted with snow, and your apartment feels… colder than outside? That’s because most Japanese apartments rely on individual heating systems, not central heating. But don’t worry! There are plenty of ways to stay snug without breaking the bank.

Common Ways to Keep Apartment Warm in Winter in Japan

Air Conditioner Heating (暖房モード)

Set your AC to 20–22°C for a comfortable temperature. Pair it with a humidifier or even a bowl of water to combat dryness.

Electric or Oil Heaters

Perfect for small rooms, but remember to ventilate and watch your electricity bill.

Kotatsu (こたつ)

The ultimate Japanese winter vibe, a heated table with a cozy blanket. It’s energy-efficient and perfect for Netflix nights.

Insulation Hacks for a Warmer Home

One of the easiest ways to keep the chill out is by installing thermal curtains or adding insulating sheets to your windows. These simple upgrades help trap warmth inside and block cold drafts. 

Another quick fix is sealing door gaps with Sukima tape, it’s inexpensive, easy to apply, and makes a noticeable difference in keeping your apartment cozy during winter.

Extra Winter Comfort Tips

• Maintain Healthy Humidity
• Keep humidity at 40–60% with a humidifier or indoor plants. It helps prevent dry skin and colds.
• Stop Condensation Before It Starts
• Wipe window moisture or use desiccants to avoid mold.
• Protect Your Pipes
• In freezing weather, let water run slowly when you’re out to prevent pipes from bursting, especially in older apartments.
• Fresh Air Matters
• Even in winter, crack a window for 10 minutes once or twice a day. It keeps your air fresh and mold-free.
• Save on Heating Costs

Use timer settings and close curtains to retain heat. These small habits can cut your electricity bill by up to 20%.

Final Thoughts

Seasonal living in Japan doesn’t have to feel like a challenge, it can be an opportunity to create a home that feels good in every season. With a few smart habits, such as ventilation, humidity control, insulation, and energy-efficient heating and cooling, you’ll enjoy breezy, fresh summers and warm, cozy winters without stress.

At Weave Living, our thoughtfully designed homes make this effortless. From clever layouts to modern amenities, we help you stay comfortable all year round, so you can focus on enjoying life, not battling the weather.