FFXi Weather

This is the website for a FFXi weather collection project that's been ongoing off and on since January 2022. The project aims to archive the retail weather data from packet capture and provide others with a dataset for study and use in their own projects. This project is not affiliated with any other project, group, etc. that may exist.

Prototype FFXi Weather Browser (warning/disclaimer: as this was a personal project originally written in 2022 as a prototype to view the captured data, expect an extremely large download size, a user interface that works best on desktop, and an inaccessible website design)

A copy of the dataset can be downloaded from here.

Current Status

Technical Information

A Vana'diel year is 360 Vana'diel days, a Vana'diel day is 24 Vana'diel hours, a Vana'diel hour is 60 Vana'diel minutes, and a Vana'diel minute is 60 Vana'diel seconds. The FFXi weather system resets every 6 Vana'diel years. Vana'diel time runs 25 times faster than Earth time. Therefore, a complete cycle of the Vana'diel weather takes 86.4 Earth days.

zones.json is a mapping between the game's map zone index and weather region id. weather.json is organized by weather region id, and times are stored as Vana'diel minutes. null prev and next values are used to indicate missing data. A table of the client's "w" values are provided below. "t" values are the transition time values used by the game client for weather transition durations.

Weather types

  1. fine (fine patches, partly cloudy)
  2. suny (sunshine)
  3. clod (clouds)
  4. mist (fog)
  5. dryw (hot spells, fire weather)
  6. heat (heat waves, double fire)
  7. rain (rain, water weather)
  8. squl (squalls, double water)
  9. dust (dust storms, earth weather)
  10. sand (sand storms, double earth)
  11. wind (winds, wind weather)
  12. stom (gales, double wind)
  13. snow (snow, ice weather)
  14. bliz (blizzards, double ice)
  15. thdr (thunder, thunder weather)
  16. bolt (thunderstorms, double thunder)
  17. aura (auroras, light weather)
  18. ligt (stellar glare, double light)
  19. fogd (gloom, dark weather)
  20. dark (darkness, double dark)