Where every figure comes from. Who measured the sea Tonnr shows, how often it is read, and on what terms.

  • Named

    Every figure says its source and its licence, in the app and in the API.

  • Open

    Only sources whose terms allow it, read where they publish.

  • Not copied

    No data is taken from another app or another site.

Buoys8

  • CANDHIS

    Cerema

    The national network of wave buoys along the French coasts, kept by Cerema with its partners.

    Coverage
    France and overseas
    Read
    Every 30 min
    Licence
    Etalab 2.0
  • Copernicus Marine

    In situ

    The buoys of the national institutes, Spain's and Ireland's among them, gathered by the European marine service.

    Coverage
    Ireland to the Canaries
    Read
    Every hour
  • NOAA NDBC

    National Data Buoy Center

    The American network of buoys and coastal stations, which also relays its partners' around the world. Waves and wind.

    Coverage
    United States and beyond
    Read
    Every 10 min
  • Irish Lights

    Commissioners of Irish Lights

    The buoys and weather stations of the Irish lighthouse service. Waves and wind.

    Coverage
    Ireland
    Read
    Every hour
    Licence
    CC BY 4.0
  • Marine Institute

    Irish Weather Buoy Network

    The weather buoys far off the Irish coast, M2 to M6. Waves and wind.

    Coverage
    Ireland
    Read
    Every hour
    Licence
    CC BY 4.0
  • Instituto Hidrográfico

    The wave buoys of the Portuguese Navy's hydrographic institute.

    Coverage
    Portugal, Madeira, Azores
    Read
    Every 30 min
  • FMI

    Finnish Meteorological Institute

    The wave buoys of the Finnish Meteorological Institute.

    Coverage
    Baltic Sea
    Read
    Every 30 min
    Licence
    CC BY 4.0
  • Queensland Government

    The wave buoys of the Queensland Government, along its coast.

    Coverage
    Queensland, Australia
    Read
    Every 30 min
    Licence
    CC BY 4.0

Wind9

  • Météo-France

    The ground stations of the French weather service: wind and gusts.

    Coverage
    France
    Read
    Every 6 min
    Licence
    Etalab 2.0
  • OpenWindMap

    A community network of wind beacons, Pioupiou among them, often set right on the spots.

    Coverage
    Mostly France
    Read
    Every 10 min
  • DMI

    Danmarks Meteorologiske Institut

    The stations of the Danish weather service, many on lighthouses and harbours: wind and gusts.

    Coverage
    Denmark, Faroes, Greenland
    Read
    Every 10 min
    Licence
    CC BY 4.0
  • Rijkswaterstaat

    The stations of the Dutch authority of the coast: on the shore, on the Wadden and on the platforms of the North Sea.

    Coverage
    Netherlands
    Read
    Every 10 min
    Licence
    CC0 1.0
  • JMA

    Japan Meteorological Agency

    AMeDAS, the automatic stations of the Japanese weather service, many on capes and harbours.

    Coverage
    Japan
    Read
    Every 10 min
    Licence
    PDL 1.0
  • NOAA CO-OPS

    Center for Operational Oceanographic Products and Services

    The weather sensors of NOAA's tide stations, on piers and harbours, on the shore itself: wind and gusts.

    Coverage
    United States
    Read
    Every hour
  • IPMA

    Instituto Português do Mar e da Atmosfera

    The stations of the Portuguese weather institute, every hour.

    Coverage
    Portugal, Madeira, Azores
    Read
    Every hour
  • AEMET

    Agencia Estatal de Meteorología

    The automatic stations of the Spanish weather agency, with gusts, on an instance that holds a key.

    Coverage
    Spain
    Read
    Every hour
  • METAR

    NOAA Aviation Weather Center

    The reports of the world's airports, where no other station stands near: wind and gusts.

    Coverage
    World
    Read
    Every 20 min

Forecasts2

  • Open-Meteo

    ECMWF, Météo-France

    Wave and wind forecasts at any point, from the models of ECMWF, at 9 km, and of Météo-France, at 8 km, with the weather to come.

    Coverage
    World
    Read
    Every 2 hours
    Licence
    CC BY 4.0
  • Copernicus Marine

    Met Office, Météo-France

    The Met Office's fine model, at 1.5 km from the Vendée to Norway; the swell apart from the wind sea, by Météo-France's model; and the map of wave heights.

    Coverage
    World

Tides1

  • Neaps

    TICON-4, NOAA

    Tides computed from open harmonic constants, at the nearest port. They are not SHOM's predictions, so there is no coefficient yet.

    Coverage
    World
    Read
    Computed

Surf breaks1

  • Tonnr's catalogue

    The breaks the instance's operator added, completed by what accounts write of them. A spot an account makes public joins it under the ODbL.

    Coverage
    World
    Licence
    ODbL 1.0

Map3

  • OpenFreeMap

    OpenMapTiles, OpenStreetMap

    The map under everything, drawn from OpenStreetMap.

    Coverage
    World
    Licence
    ODbL 1.0
  • Natural Earth

    The coastline that tells a wind station of the coast from one inland, so that a wide view shows the sea's wind first.

    Coverage
    World
  • Photon

    komoot, OpenStreetMap

    Finding a place by its name, for an account.

    Coverage
    World
    Licence
    ODbL 1.0

A source is missing?

Tell me which one, and where it publishes. The technical detail of every source, its access and its terms, is in the repository.