Data Sources

Last updated: May 2026

Race Marks displays weather, tide, and marine observation data from third-party public-data providers under open-data licences. Full attribution and provider details are listed below and surfaced inside the app where the data appears. Data providers are subject to change periodically as we expand coverage and improve quality.

Active Providers

Met Éireann (Ireland Weather)

• Provider: Met Éireann — the Irish National Meteorological Service
• Data: Forecasts, observations, marine forecasts (Ireland)
• Licence: Creative Commons Attribution 4.0 International (CC BY 4.0)
• Endpoint: openaccess.pf.api.met.ie
• Attribution: Weather data from Met Éireann, licensed under CC BY 4.0

Logo and branding usage requires separate permission from Met Éireann. Met Éireann accepts no liability for decisions based on this data.

Marine Institute of Ireland (Tides & Marine)

• Provider: Marine Institute of Ireland
• Data: Tide predictions, sea-surface temperature, oceanographic observations
• Licence: Creative Commons Attribution 4.0 International (CC BY 4.0) (per dataset metadata; some datasets may have differing terms)
• Endpoint: erddap.marine.ie/erddap/
• Attribution: Marine data provided by the Marine Institute of Ireland, licensed under CC BY 4.0

Open-Meteo

• Provider: Open-Meteo
• Data: Weather forecasts (global coverage, used as a fallback / cross-reference)
• Licence: CC BY 4.0 for data; AGPL v3 for source code
• Endpoint: open-meteo.com
• Attribution: Weather data by Open-Meteo.com

Irish Lights (Dublin Bay Buoy Observations)

• Provider: Commissioners of Irish Lights, via the CIL MetOcean API
• Data: Live wave height, wave period, swell, sea temperature, wind speed/gust/direction from the Dublin Bay buoy (MMSI 992501301)
• Endpoint: irishlights.ie
• Attribution: Buoy data from Irish Lights

Onboard Instruments

When connected, your vessel’s onboard NMEA-0183 / NMEA-2000 instruments provide live wind, depth, speed, and other readings directly to the app. These readings come from your boat, not a third-party provider, and are governed by the Race Marks Privacy Policy.

Future Providers

The following providers are in development for upcoming UK expansion:

• UK Met Office Weather DataHub — UK Open Government Licence v3
• UKHO Admiralty Tidal API — Crown Copyright, commercial licensing

Disclaimers

Open-data providers supply best-available public information for navigational and planning awareness. Race Marks displays this data “as is” and provides it for informational use alongside official sources of navigation and weather information. Race Marks should not be relied on as a sole source of navigational or weather information at sea. Always cross-check with official forecasts, charts, and on-board instruments, and follow the guidance of qualified mariners and your race officer.

Changes

We periodically review providers for data quality, geographic coverage, and licensing alignment. Where a provider is changed or added, this page will be updated and the in-app credits updated alongside the next release.

Contact

Questions about a data source or attribution? Email support@racemarks.app.