1. Sanyō-Onoda City

 An industrial and seaside city on the Seto Inland Sea in western Yamaguchi. With a history of cement manufacturing, it offers a mild climate and coastal scenery such as Kirara Beach Yakeno and Mt. Ryūō.

Basics

  • Kana: さんようおのだし
  • English: Sanyō-Onoda City
  • Area: Western Yamaguchi (Seto Inland Sea side)

① Climate

Reference: JMA normals 1991–2020 / Ube station (approximate)

  • Annual mean temperature: 16.1 °C
  • Highest monthly mean: August ~27.9 °C / Lowest monthly mean: January ~5.4 °C
  • Relative humidity: Highest July ~81% / Lowest February ~66%
  • Annual snowfall: Little to none (0–1 cm)
  • Sunshine duration: Longest around October
  • Annual precipitation: ~1,700 mm (Wettest: July ~260 mm / Driest: January ~60 mm)

② Landform

 Located on the coastal plain continuous with Ube, facing the mild Seto Inland Sea.
 The Asa River runs through the city; reclaimed and embanked areas spread along the shore.
 Gentle hills rise behind the coast, bringing sea and mountains close together.
 The coastline has few deep bays, creating calm waters.

③ Industry

 Industry is centered along the Seto Inland Sea—cement, chemicals, metals, and logistics—alongside coastal tourism (beaches and parks) plus agriculture and fisheries, forming a diverse economy.
Local Products

  • Onoda cement products: A historic industrial brand.
  • Mikan (citrus): A specialty of the coastal area.
  • Yakeno “flowers” souvenirs: Gift items themed after the scenic Yakeno coast.

④ Local Culture

 Worker culture and port-town heritage grew with industrial development.
 As the birthplace of Japan’s cement industry, many modern heritage sites remain.
 Community festivals and fireworks are key to civic life.

  • Asa River Taiko: Dynamic drum performances by youth groups.
  • Uho Dance: A dance rooted in traditional fishermen’s work songs.
  • Mt. Ryūō Fire Festival Dance: A revived performance for tourism events.
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2. Main Transportation

JR Sanyō Main Line (listed West → East)

Toward Shimonoseki
植生— 厚狭— 小野田
Toward Ube

JR Onoda Line (listed West → East)

Toward Shimonoseki
小野田— 小野田港— 雀田
Toward Ube

JR Onoda Line (south from Suzumeda)

Toward Shimonoseki or Ube
雀田— 浜河内— 長門本山
Toward Onoda Coast

Served by JR Sanyō Main Line and Onoda Line (key stations: Asa / Onoda). Adjust station lists as needed.

Airports (domestic)

  • Yamaguchi Ube Airport (Ube City, Yamaguchi)

Sanyō Expressway (West → East)

Toward Shimonoseki
Habu IC— Onoda IC
Toward Ube

Main Roads (cross-municipal)

  • National Route 2: Backbone route toward Shimonoseki and Yamaguchi City
  • National Route 190: Links Ube — Sanyō-Onoda — Shimonoseki along the coast
  • National Route 316: Toward Mine / Nagato

Ports / Sea Routes

  • Onoda Port (no regular passenger service) — City info
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3. Festivals & Events

Summer
Netarō Festival (Asa)
Around Asa Station / citywide — Official
Spring
Mt. Ryūō Sakura Festival
Mt. Ryūō Park — Official

Dates vary by year. Please check official sources for the latest information.

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4. Sights

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