May is a perfect time to visit Japan for its comfortable weather, fresh spring greenery, colorful flower festivals, and iconic seasonal attractions like the Kamikochi trails and the Tateyama Snow Wall. The month also coincides with Golden Week, Japan's biggest holiday period, bringing a festive energy to cities and countryside alike. Together, they make May one of the finest months for getting out and exploring Japan in the open air.
This guide covers weather, major events, travel tips for Golden Week, and the best places to visit Japan in May.
Weather in May
The weather in May sees the last stretch of spring, with warm days but cool mornings and evenings. Central Japan and mountainous areas, however, generally remain cooler.
| Region | Early May Avg High | Late May Avg Low |
| Tokyo | 24°C | 16°C |
| Kyoto | 25°C | 15°C |
| Osaka | 25°C | 16°C |
| Nagoya | 25°C | 16°C |
| Nagano | 23°C | 12°C |
| Takayama | 24°C | 10°C |
| Kanazawa | 23°C | 14°C |
| Hiroshima | 24°C | 15°C |
| Sapporo | 20°C | 11°C |
Light layering is possible if you prefer, however a jacket would help in the early morning, evenings, or in the mountainous regions of Takayama or Nagano.
Seasonal Highlights in May
May brings on some of Japan's most rewarding outdoor experiences. Fresh greenery blankets forests and mountain trails, flower festivals draw visitors across the country, and Golden Week fills the streets with festive energy.
Fresh Greenery (Shinryoku)
As the cherry blossoms scatter, Japan turns into a lush sea of green known as shinryoku (fresh green) season. Forests, temples or shrine grounds, gardens, and hiking trails are where it's most vivid. The season is perfect for an outdoor adventure to the Kiso Valley or an alpine excursion in Kamikochi, right before summer and humidity raises the temperature.
Flower Festivals
Late April through the middle of May, Japan sees a multitude of flower festivals. Whether its the Wisterias in Tochigi, Roses in Osaka, Tulips in Toyama, or as far as the Lilacs in Hokkaido, the full bloom of flowers is here for all floriculture enthusiasts.
Golden Week
Golden Week, occurring during late April to early May, is Japan's longest national holiday period. It consists of four public holidays, namely Shōwa Day, Constitution Day, Greenery Day, and Children's Day. While not necessarily subsequent, the Japanese government tends to time these holidays to coincide with weekends, allowing "observing" days throughout the week should a holiday fall on a weekend. The Golden Week schedule for 2026 is as follows:
| April 29 | Shōwa Day |
| May 3 | Constitution Memorial Day |
| May 4 | Greenery Day |
| May 5 | Children’s Day |
| May 6 | Constitution Memorial Day (observed) |
As one of the busiest domestic travel periods in the country, families and workers take time off together, meaning train reservations fill up weeks in advance, popular hotels book out fast, and major attractions and stations can get genuinely congested. Here are our tips for making the most of it:
- Book early: Aim for at least two to three months in advance for accommodations and transport. For highly sought-after destinations, some travelers plan as far as a year ahead.
- Expect crowds at major hubs: Busy stations like Tokyo, Kyoto, and Shin-Osaka see significant foot traffic during peak days.
- Go off the beaten path: Smaller towns and regional destinations are far less congested, and May's weather makes them ideal for exploration.
Featured Tours in May
Best Places to Visit in Japan in May
Kamikochi
May is one of the best months to visit Kamikochi. The valley has fully emerged from winter, trails are open, and the snow-capped peaks of the Japan Alps still frame the landscape beautifully. It hits a sweet spot before summer humidity and crowds arrive.
Tateyama-Kurobe Alpine Route
The route opens each spring to reveal snow walls that can reach up to 20 meters high, one of Japan's most dramatic seasonal sights. May is the prime window to see them at their tallest before the walls gradually melt through June.
Kiso Valley
The Nakasendo post towns of Magome and Tsumago are at their most atmospheric in May, draped in fresh greenery with far fewer visitors than Kyoto. A great choice for travelers looking to step off the beaten path.
Hokkaido
While the rest of Japan sees the last of spring, Hokkaido is just hitting its stride. Cherry blossoms peak in early May, the lilac festival in Sapporo runs late in the month, and the cooler temperatures make it a refreshing alternative to the warmer south.
1-Day Tour from Nagano and Matsumoto: Kamikochi & Matsumoto Castle / April to November
Best Selling
1-Day Tour from Nagano and Matsumoto: Kamikochi & Matsumoto Castle
- Spots:
- NaganoMatsumotoKamikochi
- Pick-up:
- Nagano CityMatsumoto
- Drop-off:
- Nagano CityMatsumoto
Kamikochi sits in the middle of the Japanese Alps and is accessible either from the west or the east side. The eastern route comes form Matsumoto, another city with a long and storied history. This tour starts from Matsumoto as you see the city's most impressive site, Matsumoto Castle. It is one of Japan's 12 original castles and is famous for its black color, wooden interior and interesting stories. You will also get a chance to walk along the Kaeru Michi or Frog Street that has over 50 shops, restaurants and cafes that sell many different products that may pique your interest. After a morning in the city, the afternoon will take you to see the relaxing and pristine environment of Kamikochi. The clean and fresh mountain air will be a welcome refreshment as you walk 3 kilometers along the river with your guide.
Private 1-Day Tour of the Ashikaga Flower Park and Surroundings / March - November
New Tour
[FROM NAGANO/KARUIZAWA] Private - Culture and Beauty at the Ashikaga Flower Park
- Spots:
- NaganoKaruizawaAshikaga
- Pick-up:
- Nagano CityKaruizawa
- Drop-off:
- Nagano CityKaruizawa
Japan is famous for its gardens, and the Ashikaga Flower Park demands a spot amongst the best. Although not traditionally Japanese, it is home to a huge variety of flowering plants and speaks to the love many in this nation hold for gardening. Developed in such a way that something is always blooming from Spring through Autumn, the park is most busy during the wisteria season in late April. Huge and very old, the wisteria here is on another level and is likely above anything most people have ever seen. After a stroll in the garden, a trip to the nearby Ashikaga Gakko, Japan's oldest school, and the Orihime Shrine which boasts a beautiful view over the city below.
Pick Up Locations: Anywhere in the Nagano City or Karuizawa areas
TATEYAMA ALPINE ROUTE (KANAZAWA/TOYAMA) / May-June
Recommended
1 Day Tour from Kanazawa or Toyama: Tateyama Alpine Route Snow Wall and Mysterious Valley
The breathtaking Japanese Alps stretch from the Pacific Ocean to the Sea of Japan, offering stunning scenery throughout. In Toyama Prefecture’s Northern Alps lies the renowned Tateyama-Kurobe Alpine Route, which spans majestic gorges, serene lakes, and expansive highlands. In winter, this area becomes a snowy wonderland, featuring towering snow walls up to 20 meters (60 feet) high. On this tour, you’ll ride one of our buses to Murodo, the highest point, where you can walk along the snow wall and take in the winter beauty. Along the way, we’ll stop at Ashikuraji, the historic starting point for climbs to Mt. Tateyama, to explore its spiritual significance and connection to views of heaven and hell.
Major Festivals & Events Across Japan in May
Tokyo
- Sanja Matsuri (Mid-May): One of Tokyo's three great festivals, featuring portable shrines (mikoshi) paraded through the streets of Asakusa. Tens of thousands of participants in traditional dress.
- Shibazakura Festival at Hitsujiyama Park (late April to early May): Fields of Shibazakura (pink moss) that carpet a hill in Chichibu.
Kyoto
- Aoi Matsuri (May 15): One of Kyoto's three major festivals. A spectacular procession of Heian court dress from the Imperial Palace to Shimogamo and Kamigamo Shrines.
- Mifune Matsuri (Third Sunday of May): Elegant boat procession on the Oi River in Arashiyama, re-enacting Heian-era aristocratic pastimes.
Osaka
- Rose Festival at Namba Parks (Early to Mid May): Thousands of roses in bloom in one of Osaka's most popular rooftop gardens.
- Unoha Shinji (May 2): An ancient rite that spans thousands of years to commemorate the Sumiyoshi Taisha. Literally means “Rabbit Flower Rite”, hence why it happens on “Day of the Rabbit” in May.
Hiroshima
- Hiroshima Flower Festival (Early May): Another three day festival that primarily features. carnations and petunias. The iconic 8 meter flower tower is something to look out for.
- Mantō Mitama Matsuri (Late May): Another three day festival to commemorate the war dead. One of the key events is a dance performed by up to 100 shrine maidens.
Kanazawa
- Fukuno Yotaka Matsuri (Early May): An upbeat night festival full of drum beats and shouting. The highlight is the parade float “battle” where 2 parade floats, manned by different teams, engage in destroying each other’s float.
- Tonami Tulip Fair, Toyama (Late April to Early May): Over three million tulips bloom across Tonami's fields in one of Japan's largest flower festivals, with colorful displays and events celebrating the region's century old tulip farming heritage.
Seasonal Special
[Spring Only] 1 Day Tour from Kanazawa: Tonami's Terrific Tulips and the UNESCO site of Gokayama
Nagoya
- Atsuta Shrine Bugaku Shinji (May 1): An ancient shinto ceremony performed since the 10th century as an offering to the kami for agricultural blessing. The deities being revered here in particular are Amaterasu-Omikami and the spirit of Kusanagi-no-Tsurugi, a legendary sword.
Takayama
- Norikura Skyline Opening (Late May): the opening of the iconic alpine route where you can enjoy a snow wall and access nature
Nagano
- Iiyama Nanohana Festival (Early May): Fields of yellow canola flower to welcome Spring’s arrival.
- Tateyama-Kurobe Alpine Route Opening (May to June): The iconic alpine route opens to the public each spring, revealing snow walls that can reach up to 20 meters high.
- The Great Wisteria Festival, Ashikaga Flower Park in Tochigi (Mid-April to Late May): Japan's most celebrated wisteria festival, where century-old wisteria trees create cascading canopies of purple, white, and pink, regularly ranked among the world's most beautiful flower spectacles.
Best Selling
[Spring Only] 1-Day Tour from Nagano: Snow Walls of Tateyama-Kurobe Alpine Route
- Spots:
- NaganoAlpine Route
- Pick-up:
- Nagano City
- Drop-off:
- Nagano City
Sapporo
- Lilac Festival, Sapporo Odori Park (Late May): A fragrant flower festival unique to Sapporo.
Not sure which festivals match your travel dates? Our team can recommend the best events and seasonal experiences during your visit.
Travel Tips & Local News
- Reserved Trains: During Golden Week, non-reserved cars on most services fill up quickly, and standing for long journeys is not uncommon. To avoid this, securing a reserved seat in advance is strongly recommended wherever possible. See our Ultimate Guide to Shinkansen Seating and Tickets to learn more.
- Festival Closures: Some roads and attractions may close temporarily during large parades or events. Always check local schedules.
- Weather Variability: Days can shift quickly. It’s best to pack both a light jacket and an umbrella.
FAQs About Visiting Japan in May
Is May a good time to visit Japan?
Yes. May offers mild temperatures, low humidity, vibrant spring scenery, and numerous festivals throughout Japan.
Does Golden Week affect tourists?
Yes. Golden Week is one of Japan's busiest travel periods. It is still a great time to travel as there are many special events and activities, but accommodation, trains, and domestic flights often sell out months in advance. So we recommend booking as much as you can in advance.
What should I wear in Japan in May?
Light layers are ideal. Bring a jacket for mornings, evenings, and mountain destinations such as Kamikochi, Takayama, and Nagano.
Where are the best flower festivals in Japan in May?
Popular choices include:
- Ashikaga Flower Park Wisteria Festival
- Tonami Tulip Fair
- Sapporo Lilac Festival
Plan Your May Visit
From Hokkaido's purple lilacs to the bright warm yellow canola flowers of Nagano, and the festive energy of Golden Week, May is one of Japan's most rewarding months to explore for those that love going out in nature. Snow Monkey Resorts can connect your trip with connectable day tours across all major regions.
Tips for Planning:
- Book accommodations and transport earlier than usual to account for Golden Week.
- Dress in layers for cooler mornings and evenings.
Ready to experience Japan in May?
With Snow Monkey Resorts, you can create a fully personalized, multi-day Japan itinerary by connecting our one-day tours—giving you ultimate flexibility, convenience, and expert local guidance every step of the way.
Learn how to create your one-of-a-kind itinerary or check out our recommended itineraries and start planning your May trip to Japan today.
