If it’s your first summer in Japan, you’re probably asking yourself that exact question.
Japan’s summers are not just hot—they’re hot and humid. Many visitors are surprised that 35–38°C (95–100°F) can feel even hotter because of the humidity. On some extreme days, temperatures even climb above 40°C (104°F).
Before you head outside, here are a few things you should know.
🌞 Why Does Japan Feel So Hot?
Unlike dry countries such as Australia or parts of the United States, Japan has very high humidity during summer.
Imagine walking around inside a giant greenhouse—that’s what it can feel like.
Even if the temperature is “only” 33°C (91°F), it may feel much hotter.
🥵 The Sidewalk Is Hot Enough to Fry an Egg… Almost!
The air temperature isn’t the only problem.
Concrete roads, train platforms, and buildings absorb heat all day and release it slowly at night.
That’s why Tokyo often feels just as hot after sunset.
💧 Convenience Stores Might Save Your Life
Japan’s convenience stores aren’t just for snacks.
They sell almost everything you need to survive summer:
- Ice-cold drinks
- Cooling body wipes
- Sports drinks
- Ice cream
- Portable ice packs
- Sunscreen
You’ll quickly understand why locals stop by a convenience store several times a day during summer.
🚆 Air Conditioning Is Everywhere
Good news!
Most trains, cafés, shopping malls, and convenience stores are air-conditioned.
If the heat becomes too much, take a short break indoors before continuing your trip.
☂️ Why Are So Many People Carrying Umbrellas?
They’re not avoiding the rain.
Many Japanese people use UV umbrellas to block the sun.
It may look unusual at first, but they can make a huge difference on a hot day.
🧂 Sweat More Than You Expect
You may sweat more in one afternoon than you normally do in an entire day.
Drink water often, but don’t forget electrolytes too.
Sports drinks like Pocari Sweat and Aquarius are popular choices.
🎆 Summer Is Worth It
Despite the heat, summer is one of Japan’s most exciting seasons.
You’ll find:
- Fireworks festivals (Hanabi)
- Traditional summer festivals (Matsuri)
- Street food
- Beaches
- Beautiful mountain escapes
The heat is intense—but so are the experiences.