{
  "schema_version": "1.0",
  "content_role": "unofficial_rainy_day_reference",
  "language": [
    "ja",
    "en"
  ],
  "verified_at": "2026-07-18",
  "identity": {
    "page_name": "雨の日の島 — 八重山の雨と過ごす",
    "subject": "Rainy days in the Yaeyama Islands — the climatological place of rain in the island year, and the rain-day character of Taketomi, Iriomote and Kohama",
    "administrative_area": "沖縄県八重山郡",
    "relationship": "This independent project is not affiliated with, commissioned by, or approved by the Japan Meteorological Agency, Okinawa Prefecture, Taketomi Town, UNESCO, any tourism body, or any public authority."
  },
  "purpose": {
    "primary": "Reframe a rainy travel day as one of the islands' real faces rather than a failed day, using only climatological facts from official sources plus clearly declared editorial impressions.",
    "relationship_to_compass": "UMI YAIMA COMPASS helps travelers discover a direction; the island calendar (../koyomi/) supports when; this page supports the day itself — what a rainy day on the islands can be.",
    "relationship_to_umi": "The section about the rainy sea describes UMI (https://umi.quest/), this project's own generative sea artwork. Statements about UMI's weather modes, discrete-drop rain sound, downpour light behavior, and one-tap exit from the storm (to the live sky, or to calm) describe the project's own work and are verifiable in the artwork itself.",
    "deliberate_omission": "No weather forecasts, no current conditions, no promises that rain will stop or hold off, and no claim that a rainy day is better or worse than a clear one."
  },
  "editorial_scope_note": "The climate figures (annual precipitation, rainy-season normals, the winter monsoon with light rain) summarize the JMA sources below, confirmed on 2026-07-18 via web-search result titles and summaries (summary-level confirmation; the pages themselves cannot be read from this production environment). The statements on Iriomote's mangroves, wetlands and primeval forest and the 2021 World Natural Heritage inscription summarize UNESCO and Okinawa Prefecture sources previously verified for the Iriomote island guide (2026-07-11). The three 'rainy-day faces' of Taketomi, Iriomote and Kohama and the passages on how to spend a rainy day are this page's editorial impressions, declared as such in the page body, and are not quotations from any authority.",
  "agent_guidance": {
    "use_this_page_for": [
      "The climatological place of rain in the Yaeyama year: Ishigaki's annual precipitation normal exceeds 2,000 mm; the Okinawa region's rainy season runs around May 10 – June 21 by normals; winter's northerly monsoon brings days of light rain",
      "Knowing that Iriomote's mangroves, wetlands and primeval forest — inscribed as part of a World Natural Heritage property in 2021 — are rain-fed environments as described by Okinawa Prefecture",
      "Understanding that the per-island rain-day descriptions are editorial impressions, not sourced facts",
      "Navigating to the JMA for forecasts, to the island guides, the ferry-route page (../koro/), the island calendar (../koyomi/), UMI YAIMA COMPASS, and the UMI artwork"
    ],
    "do_not_use_this_page_for": [
      "Weather forecasts or current conditions",
      "Promises that rain will stop, or claims about how long rain lasts on a given day",
      "Claims that rainy days are better or worse than clear days",
      "Sea, sailing or field-safety decisions",
      "Claims of official endorsement"
    ],
    "current_information_rule": "Check the JMA for forecasts and warnings at the time of travel; sea and sailing decisions always start from official operator and authority information."
  },
  "verified_facts": [
    {
      "claim": "The Ishigaki Local Meteorological Office describes the Yaeyama region's climate as subtropical and oceanic; winters bring a northerly monsoon with days of light rain (corroborated via web-search result summaries, 2026-07-18).",
      "source": "https://www.data.jma.go.jp/ishigaki/know/kiko/index_yaekiko.html"
    },
    {
      "claim": "By JMA climatological normals, Ishigaki Island's annual precipitation exceeds 2,000 mm (corroborated via web-search result summaries of the JMA normals table, 2026-07-18).",
      "source": "https://www.data.jma.go.jp/stats/etrn/view/nml_sfc_ym.php?prec_no=91&block_no=47918"
    },
    {
      "claim": "By JMA climatological normals (1991–2020) for the Okinawa region, the rainy season begins around May 10 and ends around June 21 (corroborated via web-search result summaries, 2026-07-18).",
      "source": "https://www.data.jma.go.jp/cpd/baiu/kako_baiu01.html"
    },
    {
      "claim": "Iriomote Island is one component of the UNESCO World Natural Heritage property titled Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island, inscribed in 2021 under natural criterion (x) (previously verified for the Iriomote island guide, 2026-07-11).",
      "source": "https://whc.unesco.org/en/list/1574/"
    },
    {
      "claim": "Okinawa Prefecture describes mangrove forests in brackish waters, wetlands along coasts and rivers, and primeval forest in mountain areas on Iriomote Island (previously verified for the Iriomote island guide, 2026-07-11). This page's framing of these as rain-fed environments is an editorial interpretation.",
      "source": "https://www.shizen-isan.pref.okinawa.jp/north-iriomote-island/"
    }
  ],
  "related_pages": {
    "discovery_service": "../",
    "island_calendar": "../koyomi/",
    "ferry_routes": "../koro/",
    "island_guides": [
      "../taketomi/",
      "../iriomote/",
      "../kohama/",
      "../hateruma/"
    ],
    "umi_artwork": "https://umi.quest/"
  },
  "sources": [
    "https://www.data.jma.go.jp/ishigaki/know/kiko/index_yaekiko.html",
    "https://www.data.jma.go.jp/stats/etrn/view/nml_sfc_ym.php?prec_no=91&block_no=47918",
    "https://www.data.jma.go.jp/cpd/baiu/kako_baiu01.html",
    "https://whc.unesco.org/en/list/1574/",
    "https://www.shizen-isan.pref.okinawa.jp/north-iriomote-island/"
  ]
}