One of Hokkaido's 14 regions
Oshima渡島
Hakodate's night view, castle towns and the shinkansen gateway.
Oshima is Hokkaido's historic south — the first part of the island to open to the outside world. Hakodate wears that history beautifully: Motomachi's churches and slopes, red-brick warehouses on the bay, a morning market that justifies the trip alone, and the celebrated night view from Mt. Hakodate.
Beyond the city, Edo-era Japan lingers at Matsumae, the island's only castle town, and Onuma's island-dotted lakes sit beneath the elegant cone of Mt. Komagatake. Since the shinkansen reached Shin-Hakodate-Hokuto, this is where many Hokkaido journeys now begin.
🧭 The Hokkaido Shinkansen arrives at Shin-Hakodate-Hokuto; Hakodate also has its own airport with Tokyo flights.
Oshima highlights
Mt. Hakodate night view
The two-sea sparkle regularly ranked among Japan's best night views.
Hakodate morning market
Seafood bowls at dawn, steps from the station — worth the shinkansen ride alone.
Matsumae castle town
Hokkaido's only Edo-era castle town, famous for spring cherry blossoms.
Onuma & Mt. Komagatake
Island-dotted lakes under a strikingly shaped volcano, 30 minutes from Hakodate.
The 11 towns of Oshima
Click a town to jump to its entry
Hakodate函館市
A port town of slopes, red-brick warehouses and a night view regularly ranked among Japan's best. The morning seafood market alone justifies the shinkansen ride.
Hakodate town page →Hokuto北斗市
Hokuto is where the shinkansen arrives in Hokkaido — with a silent Trappist monastery avenue and coastal fields facing Hakodate across the bay.
Hokuto town page →Matsumae松前町
Matsumae is Japan's northernmost castle town — 250 varieties of cherry trees bloom around the keep, and the local kelp-squid pickle bears its name.
Matsumae town page →Fukushima福島町
Fukushima town dries more surume squid than anywhere in Japan and raised two yokozuna — sumo pride runs deep on this strait-facing shore.
Fukushima town page →Shiriuchi知内町
Shiriuchi grows Hokkaido's famous thick garlic chives and farms oysters where the Tsugaru Strait current runs fast.
Shiriuchi town page →Kikonai木古内町
Kikonai greets the shinkansen at Hokkaido's first stop and purifies itself each January with an icy sea ritual centuries old.
Kikonai town page →Nanae七飯町
Nanae holds Onuma Quasi-National Park — islet-dotted lakes under Mt. Komagatake — and claims the birthplace of Western farming and the Danshaku potato.
Nanae town page →Shikabe鹿部町
Shikabe's geyser blows every ten minutes beside the fishing port — steam your own seafood at the roadside station's hot-spring kitchen.
Shikabe town page →Mori森町
Mori invented ikameshi — squid stuffed with rice, the king of station bento — beneath the sharp silhouette of Mt. Komagatake.
Mori town page →Yakumo八雲町
Yakumo is the only town in Japan facing two seas — Volcano Bay and the Japan Sea — and the birthplace of Hokkaido's carved wooden bears.
Yakumo town page →Oshamambe長万部町
Oshamambe means crab rice — the kanimeshi bento sold at its junction station since steam-train days — plus a storied radium hot spring in the hills.
Oshamambe town page →
Guides that cover Oshima
Christmas in Hokkaido 2026: Markets, Lights and a White Christmas
Christmas in Hokkaido 2026: the Munich Christmas Market in Sapporo runs November 20 – December 25, the Hakodate Christmas Fantasy December 1–25 with fireworks at 18:00, and in an average year lasting snow cover has begun in Sapporo by December 6. Dates, snow and planning.
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First Snow in Hokkaido 2026: When Does It Start Snowing?
When does it start snowing in Hokkaido? In an average year the first snow falls in Asahikawa and Wakkanai on October 19, Kutchan (Niseko) on October 20 and Sapporo on October 28; snow stays on the ground in Sapporo from December 6. The 2026 situation, last winter's dates and what it means for your trip.
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Hakodate in Winter 2026: Christmas Fantasy, Night View and Weather
Hakodate in winter: the Christmas Fantasy runs December 1–25, 2026 at the Red Brick Warehouses (free, fireworks at 18:00 nightly). Hakodate is milder than Sapporo, with a December average of 3.2°C by day and -3.6°C at night. Night view, access and planning tips.
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Hokkaido in Winter Without Skiing: Snow Play, Onsen & Routes
A Hokkaido winter trip without skis: compare snow play at Takino, Sapporo food and indoor days, a Jozankei day-use bath and an optional Asahiyama Zoo extension, with a car-free Sapporo-based 3-night plan, swaps for bad weather and checks before each outing.
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Hokkaido in April: Weather, Clothes and a Flexible Route
Plan April in Hokkaido: five-city climate normals, layered clothing, Sapporo and Hakodate routes, and checks before booking spring activities.
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Mount Hakodate Night View: Access & Ropeway Closures
How to reach the Mount Hakodate night view by ropeway, seasonal summit bus or car, what changes during the autumn 2026 ropeway maintenance, and how to plan your way back down.
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More guides for this region (9)
- Sapporo to Hakodate: Train, Bus or Car?
- Hokkaido Rail Pass 2026: Prices, Area Passes and When It Pays Off
- Hokkaido Winter Weather: Temperatures and Snow by Month, and What to Wear
- Hakodate Food Guide: Morning Market, Ramen & Burgers
- Getting Around Hokkaido: Car, JR, Buses and IC Cards
- Hokkaido Driving Times: How to Check Routes from Sapporo and New Chitose
- Best Places to Visit in Hokkaido: Cities, Nature and Onsen
- 5-Day Hokkaido Road Trip: Otaru, Lake Toya and Hakodate
- Hokkaido Food Guide: Regional Dishes and Where to Try Them