How to Stay Dry, Cool, and Comfortable from Mid-June to Mid-July
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Welcome to Japan’s Most Humid Season
Between mid-June and mid-July, most of Japan enters tsuyu, or the rainy season.
This isn’t just “a little rain” here and there—expect humid mornings, sudden downpours, and hot, wet afternoons. That said, it’s also one of the most beautiful and peaceful times to travel—if you’re prepared.
With the right wardrobe and a little knowledge of what to expect, you can enjoy misty gardens, quiet temples, and hydrangeas in bloom—without getting soaked.
How Many Days Does It Actually Rain?
Let’s look at the actual climate data from Japan Meteorological Agency (JMA) for the rainy season period in three major cities:
☔ Average Rainy Days During Tsuyu
(Mid-June to Mid-July – approx. 30 days)
| City | Avg. Rainy Days | % of Tsuyu Period | Common Rain Pattern |
|---|---|---|---|
| Tokyo | 20 days | ~67% of the time | Often starts in the afternoon; some days rain all day |
| Osaka | 19 days | ~63% of the time | Short, intense bursts; tends to rain in late afternoon |
| Kyoto | 20 days | ~67% of the time | Cloudy mornings, with rain often starting after lunch |
So on average, 2 out of every 3 days during tsuyu will have some amount of rain.
But here’s the good news: it’s usually not all-day rain. Most days have periods of clear skies, especially in the morning.
What’s Tsuyu Really Like?
- 🌡️ Temperatures: 22°C–30°C (72°F–86°F)
- 💦 Humidity: 80% or more—sticky, heavy air
- ☁️ Sky: Often gray or overcast, but with clear breaks
- 🌧️ Rain style: Light drizzle → heavy downpour → dry break → repeat
And don’t forget: indoor AC can be strong—cold and dry. So dress for the outside but carry a layer for indoors.
What to Pack for the Rainy Season (Stay Cool, Stay Dry)
Your clothes should be:
- Quick-drying
- Light and breathable
- Comfortable in humidity
- Able to protect you from rain and sweat
🎒 Packing Essentials:
| Category | What to Bring |
|---|---|
| Tops | 2–3 quick-dry T-shirts / AIRism or moisture-wicking tops |
| Bottoms | 2 lightweight pants / breathable skirts / shorts |
| Outerwear | 1 lightweight rain jacket or compact poncho |
| Shoes | Waterproof sneakers or travel sandals with grip |
| Accessories | Compact umbrella, UV hat, sunglasses, mini towel |
| Layers | 1 thin long-sleeve shirt or cardigan (for AC indoors) |
| Socks | Merino wool or synthetic quick-dry types |
🧳 Pro Tip: Avoid heavy fabrics like denim or cotton—they stay wet and get heavy fast.
Footwear Matters Most
Nothing ruins a trip faster than wet feet and squishy socks.
👟 Best Footwear Options:
- Water-resistant sneakers (with ventilation)
- Stylish rubber flats or rain-friendly loafers
- Sporty travel sandals (if you don’t mind wet feet)
🧦 Don’t forget quick-dry socks. Carry a spare pair in your bag if you’re walking all day.
Real-World Rain Pattern: When Does It Rain?
Here’s a quick guide to typical daily rain timing based on national weather patterns:
| Time of Day | Likely Conditions |
|---|---|
| Early Morning | Cloudy or dry, some fog |
| Late Morning | Light drizzle possible |
| Afternoon | Frequent showers, often heavy |
| Evening | Rain may stop—or intensify again |
🎒 Always carry a compact umbrella or poncho—you’ll use it more than you expect!
What NOT to Wear
- ❌ Jeans or heavy skirts
- ❌ Flip-flops or suede shoes
- ❌ Jackets without ventilation
- ❌ Backpacks without a rain cover
Instead, go for smart layers, synthetic fabrics, and neutral colors that won’t show rain splashes.
What You Can Buy in Japan During Tsuyu
Japan is perfectly prepared for rain. You can easily find:
- ☂️ Clear umbrellas (at every conbini for ¥500–¥800)
- 🧥 Light raincoats and ponchos (Daiso, Don Quijote, MUJI)
- 🧦 Quick-dry socks at UNIQLO, Muji
- 🧴 Anti-humidity hair products, facial blotting paper, deodorizing sprays
- 🧻 Mini towels and fans at 100-yen stores
🛍 Extra tip: Many stores start their early summer sales in late June!
Final Thoughts: Don’t Fear the Rain—Be Ready for It
The rainy season is part of Japan’s rhythm—it brings the green to the temples, the bloom to the hydrangeas, and the calm to the tourist crowds.
Dress smart. Pack light. Be flexible.
Tsuyu doesn’t have to ruin your trip—it can even become the most memorable part of it.
🎥 For more travel tips and guides on all things Japan check out the PiQtour YouTube channel!
