Tsuyu: Japan’s Rainy Season
Tsuyu — the rainy season, literally “plum rain” (named for the time when plums ripen) — arrives in Japan from late May in Okinawa and sweeps northward, reaching Honshu in mid-June and Hokkaido in July. For six to seven weeks, persistent grey skies and daily rain define the atmosphere. Tourist numbers drop, prices fall, and the gardens that Japan is famous for reach their most saturated, luminous green.
The Hydrangea Season
Tsuyu is hydrangea season. Ajisai (hydrangea) blooms in shades of blue, purple, pink, and white, and the plant thrives in the cool wet conditions. Temple and shrine gardens planted with hydrangeas transform in June into some of the most atmospheric spaces in Japan:
- Meigetsu-in, Kamakura: Known as the “Hydrangea Temple,” with 2,500 plants lining paths up to the main hall. Arrive early to beat the queues that form even in rainy season.
- Hakusan Shrine, Tokyo: The Hakusan Hydrangea Festival runs for a week in June, with evening illuminations on weekends.
- Mimurotoji Temple, Uji: 10,000 hydrangea plants alongside a lotus pond create one of Kyoto Prefecture’s finest June views.
- Shirokane Takanawa area, Tokyo: Neighborhood streets lined with hydrangeas along temple walls, without crowds.
Rain and the Japanese Garden
Rain transforms the Japanese garden. Moss — the ground cover of classic Kyoto gardens — glows an impossible electric green when wet. Stone surfaces darken and textures emerge. The sound of rain on gravel, bamboo, and water basins (tsukubai) deepens the meditative atmosphere that these gardens were designed to provide. Gardens like Saihoji (Kokedera, the Moss Temple), Tofukuji, and Ginkakuji are at their finest during tsuyu — and as tourist numbers drop, the experience becomes more intimate.
Travel Benefits of the Rainy Season
Tsuyu is one of Japan’s best-value travel windows. Hotel prices at major destinations drop 20–40% compared to cherry blossom and autumn foliage peaks. Museum queues are shorter. Popular shrines and temples see half the usual visitor numbers. For photography, overcast skies eliminate the harsh midday shadows that make outdoor shooting difficult in summer, providing even, soft light that flatters architecture and greenery.
Rain gear is essential: a compact umbrella (available at every convenience store for ¥500–¥700) and waterproof shoes make wet days comfortable. Most Japanese travelers carry umbrellas as standard equipment throughout June and July.
Tsuyu Weather by Region
Okinawa and Kyushu typically see tsuyu from late May; the Kanto region (Tokyo) from around June 10th; Tohoku from late June; Hokkaido largely misses the front and has a shorter, lighter rainy period. The season ends as the Pacific high pressure system moves north, bringing the intense humidity and heat of Japanese summer. The end of tsuyu (tsuyu-ake) is celebrated as the signal for summer to begin.
Practical Tips
Pack quick-dry clothing — cotton becomes uncomfortable when wet. Many indoor attractions, museums, and galleries are quieter during tsuyu and ideal for bad-weather days. Ryokan and onsen towns are particularly pleasant in the rain: a hot bath, the sound of rain on a wooden inn, and a kaiseki dinner make for a deeply Japanese experience regardless of weather. Reserve umbrella-friendly outdoor itineraries for mornings (when rain is statistically lighter) and museums and indoor experiences for afternoon downpours.