First Time in Japan for Summer? Here's What You Need to Know

“I heard summer in Japan is hell. Will it really be okay?” This was a question I asked myself dozens of times before leaving. To get straight to the point, it's half true and half false.

Honestly, my first summer trip to Japan was a complete shock. It was late July in Tokyo. The moment the automatic doors at Narita Airport slid open, a heavy, sticky air, completely different from the sweltering heat of Korea, enveloped my entire body. It wasn't just 'hot'; it felt like stepping into a giant steam sauna. Just a short walk would have me sweating buckets, and even standing still felt suffocating. I prided myself on being able to handle Korea's heat, but I was helpless against this next-level humidity.

However, there are special scenes that exist only in the Japanese summer, which you can only experience after paying the price of this harsh weather. If your travel goal is simply to check off famous tourist spots and go shopping, then it's best to avoid summer. But if you're a traveler who values the unique experiences and atmosphere that a season offers, it's a different story.

Summer in Japan is a season not to be 'endured,' but to be 'enjoyed.' This is because countless bits of wisdom for beating the heat and plenty of fun activities are woven into everyday life.

Let me give you an example. The fireworks (hanabi) that cool down the midsummer night's heat are not just an event; they're a massive festival that gets the whole city buzzing. The experience of sitting on a mat on the riverbank and watching the fireworks embroider the night sky is unforgettable. Stopping by a small matsuri (festival) at a local shrine to eat yakisoba and mingling with people in yukatas are also things you can only do in summer. From kakigori (shaved ice) with sweet syrup over cool ice, to cold pickled cucumbers sold on the street, and the clear, refreshing sound of furin (wind chimes) hanging from the eaves—all these pieces complete the picture of a Japanese summer.

Ultimately, a summer trip to Japan is a matter of 'choice.' There are definitely experiences valuable enough to endure the oppressive heat. Japan's summer is undoubtedly harsh, but it hides a charming side that turns even that heat into something romantic. So, what's the first thing you need to know to properly enjoy this hot season? It's the true nature of that infamous 'humidity.'

The Suffocating Humidity: Should You Really Be Prepared?

Yes, you need to be thoroughly prepared. I'm not kidding.

If summer in Korea feels 'hot,' summer in Japan feels more like being 'steamed.' Especially from mid-July to late August, average temperatures of 30-35°C are common, and the humidity consistently hovers above 80%. The 'feels like' temperature is beyond imagination. For the first few days, I honestly wondered, 'What am I even doing here?' I could feel sweat trickling down my back in the short time it took to cross the Shibuya Scramble Crossing. It was the moment I truly understood why Japanese people always carry a small handkerchief and why every station and convenience store sells so many types of sports drinks.

That's why the Japan Meteorological Agency issues a daily 'Heatstroke Alert (熱中症警戒アラート).' This isn't just a sign that it's 'hot'; it's a warning that the heat can be a threat to your health. I actually saw people feeling dizzy during my trip. It's a good idea to check the risk level for your planned destination in advance on the Japan Meteorological Agency's Heatstroke Information page. And never forget: hydration is not an option, it's a necessity.

Why You Should Still Visit in the Summer

Despite all these challenges, the reason I dream of visiting Japan in the summer again is clear. It's because of the special experiences you can only have in summer, which make the 'steaming heat' I mentioned earlier worth enduring.

The most iconic of these are the matsuri (祭り) and hanabi (花火). They have a unique atmosphere, a delicate balance between the ordinary and the extraordinary, that's different from local festivals in Korea. Grand festivals like the majestic procession of Kyoto's Gion Matsuri, with its centuries of history, or the vibrant Tenjin Matsuri in Osaka with its countless boats on the river are certainly amazing. But the real gem is stumbling upon a small, humble festival at a local shrine during your travels. Walking among people beautifully dressed in yukatas, taking in the smell of grilling yakisoba and the sound of taiko drums, you can feel like a local, even if just for a moment.

The hanabi (fireworks) that spectacularly light up the night sky are truly a sight to behold. While Korean fireworks often focus on the thrill of continuous explosions, each firework in a Japanese hanabi is like a work of art. The delicacy of a large, clear circle drawn in the night sky before slowly fading away, and the intricate details of character or heart shapes created with precise technology, are art in themselves. Enjoying hanabi with a cold can of beer from a convenience store while sitting on a mat is the ultimate reward that makes you forget all the hardships of the day.

But the joys of summer aren't limited to festivals. You can't miss the feast of flavors available only this season. There's grilled eel (unagi), a stamina-boosting dish to beat the heat; the fun of catching noodles flowing down a bamboo slide in nagashi-somen; and the 'adult kakigori' with rich matcha syrup and red beans on fluffy ice. Even convenience stores constantly tempt us with limited-edition summer beers featuring firework designs and seasonal desserts.

If you love shopping, you can't miss the massive summer sale season that starts in early July. From department stores to select shops, everyone offers incredible discounts. You might find yourself with bags full of great finds while enjoying some indoor shopping to escape the heat. Heat hazes shimmer above the hot asphalt, but the clear sound of wind chimes (風鈴, furin) hanging from shop eaves and the chorus of cicadas from all around become the BGM of the Japanese summer. This sensory landscape is the true charm of a summer trip that photos alone cannot capture.

Conclusion: Final Tips for a Summer Trip to Japan for Beginners

So, what's the verdict? A summer trip to Japan is worth it. However, that's on the condition that you are thoroughly prepared, both mentally and physically. The sweltering heat is a clear downside, but there are more than enough vibrant and romantic moments waiting to make up for it. Instead of jumping in unprepared, it's important to plan wisely with the mindset of befriending the heat. For those of you facing a Japanese summer for the first time, I've compiled a few practical tips.

What to Wear: Absolutely choose cool, breathable fabrics. Functional clothing like Uniqlo's AIRism or linen materials are great. A hat and sunglasses to block the sun are essential! Lighter-colored clothes, rather than dark ones, will help reduce heat absorption.

Essential Items: A portable fan is no longer an option, it's a necessity. A small handkerchief for wiping sweat, and cooling sprays or wipes for your body are also very helpful. It's a good habit to carry a small tumbler to stay hydrated throughout the day.

Itinerary Planning: Don't try to cram too much into one day. A flexible schedule is best: start your day early, take a break in a café or shopping mall during the hottest part of the afternoon, and then resume your activities in the evening after the sun has set. Big cities like Tokyo and Osaka have extensive underground shopping areas connected to subway stations, so make good use of them.

Food and Hydration: Make a conscious effort to drink water or tea, even if you don't feel thirsty. It's also important to replenish electrolytes with sports drinks, which are easily available at convenience stores and vending machines in Japan. For meals, try cool summer delicacies like soba, somen, or hiyashi chuka (chilled ramen).