Observed arrival · 2026-09-04
Roamtime Predicts the Perfect Week for Japanese Foliage
Roamtime turns weather, phenology, and nearly two decades of observations into autumn-colour forecasts for 686 Japanese destinations.
Field notes
Roamtime models autumn foliage timing from historical peak reports, meteorological records, elevation, species mix, and temperature-driven phenology. Its archive spans 18 years, and each forecast includes a date window plus an error estimate rather than a single unsupported date. The public tier covers 70 prominent locations, while the stated full dataset contains 686 Japanese spots and can be delivered through REST endpoints or an MCP server.
Observed signals
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