Screenshots

Cherry blossom map	Spot detail & weather

Fruit picking	What's On in Japan

Flowers in season	Mobile

The problem

You ask Claude, ChatGPT, or Gemini: "When should I visit Kyoto for cherry blossoms?"

You get "late March to early April" — the same answer every year, based on training data that has no idea what this winter was like.

The actual bloom date shifts by 2–3 weeks depending on temperatures. Tokyo peaked March 29 in 2024, March 22 in 2023, March 28 in 2022 — a 7-day spread in just two years. Your AI is guessing. This MCP server stops the guessing.

The fix

It connects Claude (or any MCP client) to live forecast data from the Japan Meteorological Corporation — the same data that powers SAKURA NAVI and Japan's major cherry blossom forecast sites. Bloom meters update daily at 9 AM JST; spot observations update when JMC reporters file.

You:    "I'm in Japan April 8–14. Where should I see cherry blossoms?"

Claude: Based on today's JMC forecast data:

        Cities in full bloom during your visit:
        • Sendai (Miyagi) — full bloom forecast Apr 10 (avg Apr 12)
        • Morioka (Iwate) — full bloom forecast Apr 13 (avg Apr 16, running early)
        • Akita — full bloom forecast Apr 14

        For Sendai, top spots include Tsutsujigaoka Park (92% full bloom today)
        and Nishi Park. Morioka Castle ruins are a classic.

        One thing to watch: 40% rain chance Apr 10 in Sendai. Rain speeds up
        petal fall, so Apr 11–12 is probably the safer window.

Real bloom percentages. Real park names. Real weather.

Installation

Claude Desktop / Claude Code / any stdio MCP client

{
  "mcpServers": {
    "japan-seasons": {
      "command": "npx",
      "args": ["-y", "japan-seasons-mcp"]
    }
  }
}

HTTP endpoint — no install required

Any MCP client that supports HTTP transport can point directly at the hosted instance:

https://seasons.kooexperience.com/mcp

Optional connection preferences supported by the hosted endpoint:

• dateStyle — friendly or iso
• temperatureUnit — celsius or fahrenheit
• includeCoordinates — true or false
• mapLanguage — english or japanese

Self-host

PORT=3000 npx -y japan-seasons-mcp --http
# MCP endpoint: http://localhost:3000/mcp

What's covered

... View full README on GitHub