Reference · built on requestCommons signalWeather & climate

FMI Open Data

Finnish observations, forecasts, sea, lightning, radar and CAP warnings from the Finnish Meteorological Institute over WFS and WMS.

Request accessPricing ↗

About

The Finnish Meteorological Institute publishes most of its data as open data. The WFS 2.0 service at opendata.fmi.fi/wfs answers GetFeature requests by stored query id, returning GML inside a wfs:FeatureCollection; listStoredQueries returns the full set. The WMS at openwms.fmi.fi serves map layers such as radar. Datasets include weather, wave, sea level, sun radiation and sounding observations, HARMONIE and ECMWF model forecasts, the meteorologist's edited forecast, SILAM air quality, NEMO sea models, lightning strikes and warnings in CAP format. No key is needed, and FMI offers Python, R and JavaScript libraries.

Through Fibric, an operator reads the observations and point forecasts for your sites and proposes a freeze guard, a start time, or a storm notice for your approval.

This is a reference listing. It documents what Fibric would read from FMI Open Data and what it could propose, based on the publisher's published interfaces. Fibric builds it under a managed deployment when you request it; selecting it here installs nothing.

Inputs

  • Weather observations through fmi::observations::weather::simple and its hourly, daily and multipointcoverage variants, by place, fmisid or bbox
  • HARMONIE and MEPS point forecasts: fmi::forecast::harmonie::surface::point::simple and fmi::forecast::meps::surface::point::simple
  • The meteorologist's edited forecast through fmi::forecast::edited::weather::scandinavia::point::simple
  • Wave and sea level observations (fmi::observations::wave, fmi::observations::mareograph) and forecasts (fmi::forecast::wam, fmi::forecast::sealevel)
  • Lightning strikes through fmi::observations::lightning::simple and multipointcoverage
  • Radar composites such as fmi::radar::composite::dbz, rr, rr1h and rr12h, and radar layers over WMS
  • Warnings in CAP format, and hourly air quality observations

Proposed actions

Read-only. This feed informs operators; it changes nothing.

Proposed actions are target capabilities. Every action runs propose-first and needs a validated deployment and the appropriate permissions.

What you can build

  • Guard against a hard frost

    Read the HARMONIE point forecast for each site overnight and propose freeze protection steps when temperature crosses your threshold.

    With Freeze Protection

  • Warn a site when lightning strikes nearby

    Query fmi::observations::lightning::simple with a bbox around each site and propose a notice to outdoor and lone workers.

    With Severe Weather Notice, Lone Worker

  • Prepare a harbour site for a surge

    Read mareograph observations and the sea level forecast for the nearest station and propose the storm preparation list when levels rise.

    With Storm Prep

Requirements

  • A WFS 2.0 client that can send GetFeature with storedquery_id and parse GML
  • Station ids (fmisid), place names or a bounding box for each site
  • Time windows in starttime and endtime, with a timestep, sized to stay inside the request limits
  • Attribution to the Finnish Meteorological Institute under CC BY 4.0
Authentication
None. The WFS and WMS endpoints are open; FMI states that users must accept the Creative Commons licence before using the interfaces.

Limits

  • Download Service allows 20000 requests a day and View Service 10000 a day, with a combined 600 requests per 5 minutes
  • Responses are GML; the simple format returns one feature per value, so long series get large
  • Old radar layers are being phased out in November 2026 in favour of new layers
  • No fixed update schedule is published on the pages read; the manual describes the data as continuously updated

Access and pricing

Reference listing. Public feed access is separate from Fibric integration. If you request this feed, your quote covers the build, usage, and support.

Request FMI Open Data ↗

Questions and answers

Do I need an API key for FMI open data?
No. The WFS at https://opendata.fmi.fi/wfs and the WMS at https://openwms.fmi.fi/geoserver/wms are open. FMI says users must accept the Creative Commons licence before using the interfaces.
What request limits apply?
FMI's WFS services page states the Download Service allows 20000 requests per day, the View Service 10000 per day, and the two together 600 requests per 5 minutes.
How do I find the right stored query?
Call https://opendata.fmi.fi/wfs?service=WFS&version=2.0.0&request=listStoredQueries for the list and describeStoredQueries for parameters. Ids follow a pattern such as fmi::forecast::harmonie::surface::point::multipointcoverage, used with place=helsinki in FMI's example.
Ask about FMI Open Data

Ask about the capabilities and requirements in this listing.

For project-specific requirements, contact Fibric.

This Commons signal listing is developed, published, and supported by Fibric. It reads public data published by Finnish Meteorological Institute (opendata.fmi.fi). Upstream agencies and projects are the property of their respective owners, who are not affiliated with Fibric and do not sponsor or endorse this listing. Trademark policy