Located in Gamagori City, Aichi, Katahara Onsen Hydrangea Village hosts the annual Hydrangea Festival in June 2026. During the rainy season, the entire hillside is covered with nearly 50,000 blooming hydrangea flowers, creating one of Japan’s most iconic floral landscapes. The combination of rain, mist, and vibrant colors offers visitors a magical experience of Japan’s rainy season culture, making it a popular destination for international travelers.

A Hillside Covered in Hydrangeas and Japan’s Rainy Season Beauty

The highlight of the site is the vast slope filled with hydrangeas in shades of blue, purple, white, and pink. As rain falls, visitors are surrounded by flowers gleaming in vivid colors. During the rainy season, mist often drifts through the mountains, creating a dreamlike scenery that resembles a living painting of nature.

Night Illuminations and a Dreamlike Atmosphere

During the festival period, evening illuminations transform the garden into a completely different world. The lustrous hydrangeas reflected on wet ground create a calm and poetic atmosphere unique to Japanese summer nights. This nighttime scenery is especially appreciated by international visitors as it offers a rare example of scenic beauty that can be enjoyed even in the rain.

Nearby Attractions

Gamagori Onsen seaside hot spring area
Laguna Ten Bosch resort and theme park
Scenic coastal drives along Mikawa Bay

Key Details

Dates: June 1, 2026 (Monday) – June 30, 2026 (Tuesday)
Location: Katahara Onsen Hydrangea Village, Gamagori City
Opening Hours: 8:00–21:00 (night illuminations available)
Admission: Paid entry (expected)

Main Highlights

50,000 hydrangea flowers across the hillside
Night illuminations
Photography spots
Combined experience with hot spring town

Access

Approx. 10 minutes by taxi from Mikawa-Shiotsu Station (JR Tokaido Line)
Approx. 10 minutes by taxi from Katahara Station (Meitetsu Gamagori Line)
Shuttle bus service from Gamagori City area (expected)

Inquiries

Gamagori City Tourism Association
Tel: 0533-68-2526
Available: Weekdays 8:30–17:15 (Closed on weekends & public holidays)
Aligned with Gamagori City administrative office hours