Chiba Autumn Foliage 2026: Yoro Gorge, Lake Kameyama & Mt. Kiyosumi

Autumn Foliage in Chiba

Just one to two hours from Tokyo, the mountain villages of Chiba Prefecture welcome an autumn of breathtaking beauty.

Deep ravines blazing with crimson, golden gradations shimmering across still lake surfaces — this kind of extraordinary scenery exists right next to the metropolis, and yet many people still do not know about it. If you think there are no famous autumn leaf spots in Chiba, this is your invitation to discover the truth. Chiba's autumn far exceeds expectations.

The peak foliage season in Chiba runs roughly from early October through late November, with each spot reaching its best color at slightly different times. By planning your itinerary carefully, you can experience multiple "moments of wonder" in a single trip. Mountain ravines, quiet lakeshores, misty ancient temples — each location has its own completely different personality. This guide introduces Chiba's three most representative autumn foliage destinations from the perspective of a local writer who knows them intimately. Time to leave Tokyo behind and head into the deep autumn of Chiba.

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Yorokeikoku (Yoro Valley)

When people think of autumn leaves in Chiba, Yoro Valley is almost always the first name that comes to mind. Carved deep into the heart of the Boso Peninsula, this valley combines clear mountain streams, unusual rock formations, and historic old bridges into a scenery that captivates visitors year after year. The 4-kilometer canyon trail along the Yoro River offers an immersive walk through tunnels of autumn color, with the sound of the stream as your constant companion.

Best Season

The peak foliage period at Yoro Valley is typically late November to early December — notably later than most other Kanto region spots. This is because the valley floor is sheltered from cold winds, allowing the leaves to stay on the trees longer than at higher elevations. The warm reds and oranges of the maples are particularly vivid here, and the color often lasts well into December.

Highlights

• Awamata Falls (Awamata no Taki): The valley's most famous waterfall, where water cascades down a series of rock terraces. The surrounding maples turn brilliant red in late November, creating a scene of exceptional natural beauty.
• Old Brick Tunnel: A short walk from the main trailhead, this disused railway tunnel made of red brick makes a wonderfully atmospheric backdrop for autumn photographs. The contrast of rusty brick and golden maple leaves is a favorite subject for local photographers.
• Soridani Area: The upper section of the valley, where the stream narrows and the foliage is densest. Considered by many locals to be the most beautiful stretch of the entire valley.

Access

Yoro Valley is accessible by the Isumi Railway from Goi Station (on the JR Uchibo Line from Tokyo's Soga Station), alighting at Kazusa-Nakano Station, then approximately 15 minutes by taxi or a 30-minute walk to the trailhead. By car from Tokyo (Wangan Expressway), the journey takes approximately 90 minutes.

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Kameyama Lake (Kameyama-ko)

Kameyama Lake, an artificial reservoir created by the Kameyama Dam on the Koito River, is a quiet and contemplative autumn destination that rewards those willing to venture slightly off the beaten path. The still surface of the lake mirrors the surrounding forest in autumn, creating reflection photographs of remarkable quality. Unlike the more crowded spots in the region, Kameyama Lake retains a peaceful, unhurried atmosphere even during peak foliage season.

Best Season

The best time to visit Kameyama Lake for autumn color is mid to late November. On calm, windless mornings, the lake surface becomes a perfect mirror, reflecting the surrounding hills in vivid autumn shades. Early morning is the ideal time to capture reflection photographs, before any breeze disturbs the surface.

Highlights

• Lakeside Walking Path: A gentle trail circles part of the lake, offering changing perspectives on the autumn colors and reflections as you walk.
• Boating: Small rowboats are available for rent at the dam-side facilities, allowing you to experience the autumn scenery from the water itself — a uniquely peaceful way to enjoy the foliage.
• Kameyama Dam Crest: Walking across the top of the dam provides sweeping views over the lake and the surrounding wooded hills, particularly spectacular when the trees are at peak color.

Access

By car from Tokyo, Kameyama Lake is approximately 90 minutes via the Tateyama Expressway (Kimitsu exit). Public transport involves taking the JR Uchibo Line to Kimitsu Station and then a local bus or taxi (approximately 30 minutes) to the lake. A rental car or taxi is strongly recommended for visiting this area comfortably.

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Kiyosumiyama (Kiyosumi Mountain)

Kiyosumiyama is a sacred mountain in the Boso Peninsula, steeped in Buddhist history and known for its ancient cedar forests and natural hot springs. The Kiyosumi Temple (Kiyosumiji), one of the most important temples in the Nichiren Buddhist tradition, sits at the base of the mountain and is surrounded by a garden of remarkable mossy boulders and ancient trees that turn golden in autumn.

Best Season

The autumn foliage at Kiyosumiyama is typically at its best in mid to late November. The giant Japanese cedar trees that line the approach to the temple do not produce autumn color, but the maples and other deciduous trees in the temple garden create a beautiful contrast with the ancient cedar-shaded moss garden.

Highlights

• Kiyosumiji Temple Garden: The temple garden features enormous, smooth mossy boulders (tama-ishi) transported from distant quarries centuries ago, interspersed with ancient trees and autumn foliage. It is a remarkably serene and photogenic space.
• Mountain Trail: A hiking trail ascends Kiyosumiyama to a small summit shrine, passing through old-growth forest. The trail takes approximately 2 hours round trip and offers beautiful views of the autumn forest canopy from above.
• Warabi Onsen: A small traditional hot spring inn near the base of the mountain offers day-bathing (higaeri nyuyoku) in its natural spring waters — the perfect way to warm up after a morning of autumn leaf viewing.

Access

Kiyosumiji Temple is approximately 30 minutes by bus from Awa-Kamogawa Station on the JR Uchibo and Sotobo Lines. By car from Tokyo, the journey takes approximately 2 hours via the Tateyama Expressway.