Japan Rainy Season Travel Guide
Japan Rainy Season (Tsuyu) Guide Dates by region · What to wear · Indoor attractions · Tips
Japan's rainy season — 梅雨 (tsuyu), pronounced "tsoo-yoo" — runs from early June to late July. It doesn't mean non-stop rain. With the right preparation, June–July travel is perfectly enjoyable. This guide tells you everything you need to know.
When is Japan's rainy season?
The rainy season front moves northward from Okinawa in May, reaching Tokyo and Osaka in early June, and lifting in late July. Hokkaido is the only major region with no rainy season — making Sapporo and surroundings the top rain-free summer destination in Japan.
Dates by region
| Region | Starts | Ends |
|---|---|---|
| Okinawa | Early May | Mid June |
| Kyushu (Fukuoka) | Early June | Mid July |
| Shikoku | Early June | Mid July |
| Kansai (Osaka·Kyoto) | Early June | Late July |
| Kanto (Tokyo) | Early June | Late July |
| Tohoku (Sendai) | Mid June | Late July |
| Hokkaido (Sapporo) | — | — |
※ Dates vary by 1–2 weeks each year. Check JMA (English) for the official seasonal declaration.
What the rainy season actually feels like
The bigger challenge is not the rain — it's the heat and humidity. Tokyo and Osaka reach 27–30°C (81–86°F) with humidity above 85%, making the feels-like temperature exceed 40°C (104°F). Rain provides brief relief, but the air stays thick and muggy.
🌧️ Rainfall pattern
Rarely rains all day. Morning is often clear; afternoon showers are more typical. Heavy downpours last 1–2 hours, then clear up.
🌡️ Temperature
Tokyo / Osaka: 22–30°C (72–86°F). Feels hotter due to humidity. Hokkaido: 18–24°C — comfortable and dry.
💧 Humidity
85%+ in Tokyo and Osaka. Clothes feel damp after outdoor walking. Breathable fabrics and a small towel are essential.
What to pack for rainy season travel
Clothing
- • Lightweight, breathable fabrics (linen, moisture-wicking synthetics)
- • Quick-dry materials — rain-soaked clothes dry fast in the heat
- • Thin cardigan for aggressive indoor air-conditioning
- • Sandals or waterproof shoes (puddles and wet floors everywhere)
- • Spare socks — wet socks are the enemy
Essentials
- • Compact folding umbrella — heavier "super-waterproof" ones are overkill
- • Portable fan (hand-held electric fans are sold everywhere in Japan)
- • Waterproof day bag or pack cover
- • Cooling spray or neck cooling towel
- • Reusable water bottle — stay hydrated in the heat
What to do on rainy days
Rainy days are perfect for Japan's wealth of indoor attractions — often less crowded than usual.
🏛️ Museums & galleries
Tokyo National Museum (Ueno), teamLab digital art venues, Mori Art Museum (Roppongi), Osaka Science Museum. World-class and air-conditioned.
♨️ Onsen & sento
A rainy day is the ideal excuse to spend a morning at a traditional bathhouse. Many urban onsen facilities in Tokyo and Osaka have indoor pools.
🍜 Food halls & covered markets
Depachika (department store basement food halls), Tsukiji Outer Market (covered sections), Nishiki Market in Kyoto — rain doesn't matter.
⛩️ Hydrangea temples
Rainy season coincides with hydrangea (ajisai) bloom — June is peak. Meigetsuin in Kamakura and Hakone's gardens are famous. Rain makes the colours more vivid.
Practical travel tips
- 1. Schedule outdoor sightseeing in the morning. Rain is more likely in the afternoon. Check the hourly forecast each day — Japan's weather apps are accurate to the hour.
- 2. Use the subway to avoid rain. Tokyo's and Osaka's underground networks are extensive — you can reach most major sights without stepping outside for long.
- 3. June–July is low season. Hotel prices are lower, popular attractions are less crowded, and you can often walk into restaurants without a reservation.
- 4. Consider Hokkaido. If your schedule is flexible, Sapporo in June–July offers clear weather, lavender fields in Furano (mid-July peak), and temperatures around 20°C.
- 5. Watch for heavy rain alerts. JMA issues heavy rain warnings (大雨警報) when rainfall is dangerous. Check Japan Safe or JMA for real-time alerts during your stay.
Frequently asked questions
Q. When is Japan's rainy season (tsuyu)? ▾
Japan's rainy season (梅雨, tsuyu or baiyu) runs from early June to late July across most of the country. Okinawa is first, starting in early May. Hokkaido is the only major region with no rainy season — June and July there are clear and mild.
Q. Should I avoid Japan during rainy season? ▾
Not necessarily. It rarely rains all day — mornings are often clear with rain arriving in the afternoon. Tourist crowds are smaller, accommodation is cheaper, and lush greenery looks stunning. The key is to plan indoor activities as backup and pack the right gear. Hokkaido is a popular rain-free alternative for June–July.
Q. Is rainy season just about the rain? ▾
The bigger challenge is the heat and humidity. Tokyo and Osaka reach 27–30°C with humidity above 85%, making it feel like 40°C. Rain gear is important, but managing heat is just as critical — lightweight, breathable fabrics and a portable fan are as essential as an umbrella.
Q. What is the difference between rainy season and a typhoon? ▾
Rainy season (tsuyu) is a stationary weather front that brings steady rain and humidity throughout June–July. Typhoons are powerful tropical cyclones with strong winds, concentrated mainly in August–September. Rainy season rain is persistent but mild-wind; typhoons are short, intense, and dangerous. They are separate phenomena.
Q. Why does Hokkaido have no rainy season? ▾
The tsuyu front is formed by a clash of air masses in central Japan. By the time it moves north toward Hokkaido, it dissipates before reaching the island. This makes Sapporo and the rest of Hokkaido one of the best summer destinations in Japan — clear skies, cool temperatures, and fewer tourists from June through July.
Q. What is the chance of rain all day during rainy season in Tokyo? ▾
Tokyo sees about 12 rainy days in June (out of 30), but all-day rain is uncommon. A more typical pattern is clear mornings followed by afternoon showers. Scheduling outdoor sightseeing in the morning and museums or indoor attractions in the afternoon is an effective strategy.
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