You might've heard people say that summer is the worst time to visit Japan. Honestly? We think they're missing out. Yes, it gets hot. Yes, the crowds show up. But summer in Japan is also when the country truly comes alive, and if you know where to go and how to prepare, it's an absolute cracker of a trip.
From June to August, you're looking at big fireworks displays lighting up the night sky, lazy beach days in Okinawa, and vibrant festivals spilling into the streets that simply don't exist any other time of year.
So before you write it off, let us make the case. In this guide, we'll cover everything you need to know before booking your Japan summer trip: the weather, the crowds, what to wear, the best things to do, and where to go. Right then, let's get into it!
What's the weather like in summer in Japan?
A peaceful summer scene in Japan with a bright red pagoda surrounded by green trees and visitors walking nearby
Here's the honest truth: summer in Japan is hot and humid. We're talking 30-38°C in most major cities, with humidity levels that make it feel even warmer. If you're used to British summers, this will be a proper shock to the system, but don't let that put you off.
Summer officially runs from June to August, with September still feeling very summer-like in many parts of the country. June brings the rainy season (tsuyu), which means frequent afternoon showers. By July and August, the rain clears in most regions, and the blue skies arrive in full force.
Here's a quick regional breakdown:
• Tokyo: Expect 33-36°C in July and August, high humidity, and occasional thunderstorms. Muggy but manageable.
• Osaka & Kyoto: Similar temperatures to Tokyo, sometimes slightly hotter. Kyoto in particular can feel like a sauna in August.
• Hokkaido: The cool escape. Temperatures range from 22 to 25°C, perfect if you prefer your holidays without the sweat.
• Okinawa: Hot, tropical, and beautiful. Temperatures hover around 30-32°C, but the sea breeze makes it far more bearable than the mainland.
The key takeaway? Hydrate constantly, seek air-conditioned spaces during the midday heat, and plan your outdoor activities for the morning or evening.
What are the best things to do in Japan in summer?
Go to Japan's summer festivals (matsuri)
Gion Matsuri float procession during Kyoto’s famous summer festival
If there's one reason alone to visit Japan in summer, it's the festivals. Known as matsuri, these events are loud, joyful, and deeply rooted in Japanese culture. You'll find them happening almost every weekend from late June through August.
Some major festivals to look out for:
• Gion Matsuri (Kyoto, July): One of Japan's most famous festivals, with huge wooden floats and street food stalls lining the city.
• Tenjin Matsuri (Osaka, late July): A spectacular riverside festival with fireworks that light up the entire sky.
• Awa Odori (Tokushima, mid-August): A massive dance festival where everyone, including tourists, is invited to join in.
• Sumida River fireworks (Tokyo, late July): One of the biggest hanabi (fireworks) displays in the country.
To truly embrace the festival atmosphere, dress up like a local! A lightweight cotton yukata is the quintessential summer attire in Japan, perfect for strolling through matsuri or watching hanabi (fireworks) displays. You can rent a yukata in Kyoto, the home of the Gion Matsuri.
Experience teamLab Planets in Tokyo
Sit beneath floating flowers at teamLab Planets Tokyo, one of the city’s most popular indoor summer attractions
If you want something mind-blowing, visit the teamLab Planets in Toyosu, Tokyo. This immersive digital art experience takes you through rooms filled with flowers, floating light orbs, and mirrored infinity spaces that feel completely otherworldly. It's also air-conditioned, which is a major bonus in summer!
Explore Hokkaido's flower fields and Blue Pond
Colourful flower fields bloom across Shikisai no Oka in Hokkaido, a favourite stop during the summer season in Japan
Leave the city heat for countryside breeze by heading north to Hokkaido. In summer, the region bursts into colour with its lavender fields, sunflowers, and wildflowers stretch as far as you can see.
Don't miss the Hokkaido summer flower viewing tour from Sapporo, which bundles Hokkaido’s best spots, including the Blue Pond, Shikisai no Oka, and Farm Tomita.
Head to Okinawa for beaches and marine life
Swim through Okinawa’s famous Blue Cave, one of the top summer activities for adventure seekers in Japan
For that classic summer holiday feel, Okinawa is the place to go. This chain of tropical islands in southern Japan is all about turquoise water, coral reefs, and slow-paced beach days. Snorkel through vibrant reef systems on a Blue Cave experience and take lots of underwater pics!
And if you're travelling with kids (or just love sea creatures), the Churaumi Aquarium is one of the largest in the world and home to whale sharks swimming in a massive tank you can stand and watch for ages.
Want to know more about Okinawa? Check out our complete Okinawa travel guide and start planning your visit to this summer destination!
Cool off at Odaiba Marine Park
Odaiba Seaside Park offers wide waterfront views, city skylines, and a relaxing escape during summer in Tokyo
When Tokyo gets too hot to handle, head to Odaiba Marine Park. This artificial island in Tokyo Bay offers stunning views of Rainbow Bridge, a sandy waterfront, and a chilled-out vibe that feels miles away from the city buzz. It's a great spot for an evening walk when the sun drops and the skyline lights up.
What should you wear in Japan during summer?
Packing for Japan in summer is all about keeping cool without looking like you've given up entirely. Here's what actually works:
• Lightweight, breathable fabrics: Linen, cotton, and moisture-wicking materials are your best friends. Try to avoid wearing synthetic fabrics.
• Loose-fitting clothes: Tight clothing traps heat. Go for flowy tops, wide-leg trousers, and loose dresses.
• Comfortable walking shoes: You'll clock up serious steps exploring cities, temples, and hillside parks. Lightweight trainers or sandals with good support are essential.
• A compact umbrella or sun parasol: Not just for rain; Japanese locals use parasols all summer long to block the sun, and it genuinely makes a difference.
• Sun protection: SPF50+ sunscreen, UV-blocking sunglasses, and a wide-brimmed hat are non-negotiables.
• A light cardigan or layer: Japan's indoor spaces, like malls, trains, convenience stores, are air-conditioned. You'll want something to throw on when you step inside.
• A small towel or cooling cloth: Many Japanese people carry these to wipe away sweat on the go. Grab one from a convenience store when you arrive.
Knowing what to wear in Japan during summer can genuinely make or break your comfort levels, so take the packing list seriously!
FAQs about visiting Japan in summer
What months are summer in Japan?
Summer in Japan officially runs from June through August, though September can still feel very summery, especially in southern regions like Okinawa. June is marked by the rainy season, which brings frequent but short bursts of rain. July and August are the hottest and most festive months, packed with fireworks, street food, and outdoor events.
What is Japan's hottest month?
August is generally Japan's hottest month, with temperatures regularly hitting 35-38°C in cities like Tokyo and Osaka. Humidity makes it feel even more intense, and heatwave warnings aren't uncommon. That said, northern Japan, particularly Hokkaido, stays far cooler, making it a great alternative for those who prefer milder conditions.
Is it crowded in Japan in July?
Yes, July is one of the busier times to visit, particularly around obon season in mid-August when many Japanese people travel domestically to visit family. That said, Japan is a large country with so much to explore, and crowds are manageable if you plan ahead.
Is it a good time to visit Japan in summer?
Yes, but go in with the right expectations. A Japan summer trip rewards those who embrace the heat, lean into the festival culture, and stay flexible. Summer is also ideal for beach lovers, festival-goers, and anyone wanting to experience Japan's more festive, outdoor side.
Where are the best places to visit in Japan during summer?
You're absolutely spoilt for choice, but here are the highlights:
• Tokyo: Visit festivals, rooftop bars, and big-ticket attractions like teamLab Planets.
• Okinawa: Your go-to for crystal-clear waters, tropical vibes, and some of the best diving spots in Asia.
• Hokkaido: Stays refreshingly cool all summer and looks stunning when the flower fields are in bloom.
• Kyoto & Osaka: Worth it for the culture alone, especially during Gion Matsuri and Tenjin Matsuri.
• Tohoku: A proper hidden gem. Spectacular summer festivals without the heaving crowds, ideal if you fancy dodging the tourist trail a bit.
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