Japan in May: Fresh Green and Holiday Crowds

Wisteria, carp streamers and clear spring air, with Golden Week crowds fading into one of the year's most comfortable stretches.

Published October 18, 2026 at 9:04 PM JST | By Tokyo Paul

Quick answer: May is warm, bright and generally comfortable in Japan, with Tokyo highs around 22 to 25 degrees Celsius and low humidity before the rainy season. Golden Week, from about May 3 to 5, is extremely busy. After it ends, crowds thin, wisteria and moss phlox bloom, and hiking, festivals and fresh green scenery are at their best.

Why May feels so pleasant

May is often called the most comfortable month to travel in Japan. The cold has gone, the summer humidity has not yet arrived, and the air is clear and bright. Tokyo daytime temperatures are commonly in the low to mid 20s Celsius, and evenings are comfortable for a stroll. Rain is moderate, and many days are sunny. The landscape adds to the mood. Trees are in full leaf, and the fresh green, known as shinryoku, brings a lively look to temples, gardens and mountains. The season suits walking, cycling and outdoor dining.

UV rays can be strong, so sunscreen and a hat are useful. Note that in Okinawa, the rainy season starts around early to mid May, bringing humid weather and showers. Evenings are especially nice. The sun sets late enough that you can fit a full day of sightseeing and still have time for a relaxed dinner outdoors. Terrace seating, riverside cafes and beer gardens begin to open, and the air carries the scent of new leaves. Many travelers find that May strikes a balance that is hard to match later in the year.

Golden Week: May 3 to 5

Golden Week is the busiest holiday period in the Japanese calendar. In early May, Constitution Memorial Day (May 3), Greenery Day (May 4) and Children's Day (May 5) fall together, and when combined with weekends and nearby holidays, they create a long break. Millions of people travel, and transport and attractions are crowded. Expect full trains, busy highways, long lines at popular sights and high hotel prices.

If you must travel during this time, book Shinkansen seats and accommodation well in advance, and consider less famous destinations. Airport and station crowds are heaviest at the start and end of the holiday. A flexible schedule and patience are the best tools during this stretch. Right after Golden Week, the atmosphere calms noticeably.

Children's Day and carp streamers

Children's Day on May 5 celebrates children's growth and happiness. Families fly koinobori, carp-shaped windsocks, from poles and balconies, and the colorful fish swim in the breeze. The carp represents strength and perseverance, based on a legend of the fish swimming upstream and becoming a dragon. Some towns display hundreds of carp streamers strung across rivers, a lovely sight.

Families may display samurai helmets and dolls at home, and eat kashiwa mochi, rice cakes wrapped in oak leaves, and chimaki, sweet rice wrapped in bamboo leaves. Iris baths, with iris leaves added to hot water, are a custom in some places. Look for regional events to see these traditions.

Flowers of May

Wisteria, or fuji, blooms from late April through mid May, depending on the region. Long purple, pink or white clusters hang from trellises in gardens and shrine grounds. One famous destination is a flower park in Tochigi Prefecture known for its enormous wisteria, which is lit at night in season. Moss phlox, or shibazakura, creates carpets of pink, white and purple, and a festival near Mount Fuji usually runs from mid April to late May. Roses bloom in many gardens toward the end of the month.

In Hokkaido, cherry blossoms may bloom in early May, extending the spring season there. Check bloom reports and local sites for the best dates. Gardens often publish a bloom calendar, and some extend opening hours for evening illuminations of wisteria or roses. If you plan a flower-focused day, go early to avoid heat and crowds, and check whether tickets must be bought in advance. Rainy days can still be rewarding, since wet petals and moss take on deeper colors.

Festivals worth planning around

Kyoto's Aoi Matsuri, held in mid May, is a procession in Heian-era costume that travels between the Kamo shrines. It is one of the city's three great festivals and is known for its elegant pageantry. In Tokyo, the Sanja Festival at Asakusa Shrine draws crowds in mid May, with portable shrines carried through the streets.

The Kanda Festival, one of Tokyo's major festivals, is held in odd-numbered years in May. Many local shrines hold smaller festivals as well. Dates change from year to year, so check official sites. If you attend a festival, arrive early, dress comfortably and be prepared for crowds. Respect those carrying portable shrines and keep clear of the route.

Hiking, gardens and outdoor days

May is a pleasant time for hiking at low and mid elevations, with temperatures that make walking comfortable. Trails near Tokyo, such as those around Mount Takao and Okutama, are lively at weekends. Higher mountains may still have snow, so check conditions and gear requirements. The Japanese Alps open for the hiking season gradually through late spring and summer.

Gardens, including those in Kyoto and Kanazawa, show fresh foliage. Moss gardens are lush, and ponds reflect the green canopy. Carry water, sun protection and a light rain jacket. Respect trail rules, pack out your trash and be careful near cliffs or river banks. Weekday walks are quieter.

What to eat and how to handle crowds

May foods emphasize fresh and light flavors. Bonito, called katsuo, is in season, and its seared preparation, tataki, is a regional highlight in Kochi. New tea, or shincha, is harvested in spring, and fresh green tea has a sweet, fragrant taste. Shizuoka and Kagoshima are major tea regions. Bamboo shoots and mountain vegetables are still in season in some areas. Strawberries are wrapping up, and early summer fruits begin to appear. Seasonal sweets include kashiwa mochi and sweets flavored with young leaves. Craft beer and chilled sake are pleasant choices on warm days. Many restaurants set out outdoor terraces in May.

Outside Golden Week, May is relatively moderate for tourism. Sightseeing is comfortable, and hotels may have more availability. Weekdays after Golden Week are good for visiting popular sights with fewer people. Mid to late May is a sweet spot for combining good weather with manageable crowds. If you must travel during Golden Week, plan carefully. Avoid the first and last days of the holiday for long-distance travel, and use reserved seating where possible. Keep an eye on hotel cancellation policies. Consider booking restaurants in advance, since many popular places fill quickly. Spend time in smaller towns, where the holiday crowds are lighter.

Frequently Asked Questions

Is May a good time to visit Japan?

Yes, May is one of the most pleasant months, with mild temperatures, fresh greenery and flowers. The exception is Golden Week in early May, when crowds and prices peak. Mid to late May is usually calmer. Wisteria, new tea and hiking conditions add to the appeal of the month.

What are the Golden Week dates?

Golden Week centers on May 3, 4 and 5, with additional holidays around late April and weekends. Exact lengths vary by year. It is a very busy travel time, so book early or avoid peak days. Reserved seats on the Shinkansen and early hotel bookings make a big difference during the holiday.

Does it rain in Japan in May?

Rain is moderate in most of Japan in May, and the main rainy season has not yet arrived, except in Okinawa, where it starts around early to mid May. Carry a compact umbrella for occasional showers. Humidity rises as June approaches, but most days in May feel dry and bright.

Keep Exploring

More guides from Tokyo Paul: Japan in April: Cherry Blossoms and Golden Week Prep, Japan in July: Heat, Festivals and Mountain Trips and Kashiwa Mochi: Children's Day Oak Leaf Sweet.