The hillside an hour from Nagoya where 50,000 hydrangeas glow after dark
June in Japan has a bit of a reputation problem. It's the rainy season, and plenty of visitors quietly write the month off. I understand the instinct — but June is also when one of my favourite places in Aichi comes alive, and for most of the year it's just a quiet hot-spring town.
About an hour and a half from Nagoya, on a hillside in Gamagori, there's a spot called Katahara Onsen Ajisai no Sato — the "hydrangea village." For one month a year it fills with around 50,000 hydrangea shrubs, blue and purple and pink spilling down the slopes and along the water. And here's the part I love most: once the sun goes down, they light it up.
Hydrangeas in daylight are lovely. Hydrangeas glowing under soft lamps, in the damp June air with the hot springs steaming nearby, are something else entirely. During the festival the grounds stay open until 9pm (last entry 8:30), so you can wander the lit paths in the evening cool. If you're lucky, you might even catch a Genji firefly drifting over the stream — they live here because the water is clean, and the locals are quietly proud of that. No promises; fireflies keep their own schedule. But the maybe is part of the magic.
A few honest practicalities. The 2026 festival runs through 30 June, so right now, mid-to-late June, you're in the sweet spot — the blooms are usually at their fullest. Admission is 500 yen for adults, and younger children go free. Getting there is about an hour and a half from Nagoya: a train down to Gamagori, then a short bus or taxi up to the hot-spring area. Because the exact peak shifts with the weather, it's worth a quick check before you set out.
If you'd rather spend your evening on the water, late June is high season for something we've written about before — the cormorant fishing on the Nagara River in Gifu, another easy night out from Nagoya. Two completely different ways to spend a June evening in central Japan, and both are at their best right now.
So no, don't write June off. Pack a light raincoat, come in the early evening, and let a hillside full of glowing hydrangeas change your mind. If you'd like help folding it into a few days around Aichi and Gifu, just ask — this is our home patch, and it's one of our favourite times of year in it.
