IMGW Explorer – Polish Climate Data
IMGW Data Overview
IMGW Explorer is the Poland-focused view inside Climate Explorer. It brings together temperature, precipitation, wind, pressure, humidity, sunshine, and snow observations from the IMGW-PIB network at hourly, daily, and monthly resolutions.
It is especially useful when regional detail matters: Baltic coast versus central lowlands, mountain precipitation in the south, or long records from synoptic stations used in flood and cold-season analysis.
Use the interactive explorer
Browse the national station map, then narrow the view by name, date range, and temporal resolution.
For Europe-wide near real-time hourly observations, use the EuroMeteo Explorer.
About this Data
The Institute of Meteorology and Water Management – National Research Institute (IMGW-PIB) is Poland’s principal authority for weather observation and climate monitoring. Established in 1919, IMGW-PIB operates a nationwide network of over 60 synoptic stations and hundreds of climatological and precipitation posts, making it one of the most comprehensive meteorological networks in Central Europe. Through its open-data portal, IMGW-PIB publishes quality-controlled observations that span decades of continuous measurement — some stations holding records that reach back to the early 1950s.
Poland’s climate is shaped by its geographical diversity. The country sits at the crossroads of maritime Atlantic, continental Eurasian, and polar Arctic air masses. The northern Baltic coast experiences milder winters and cooler summers; the eastern borderlands see sharper temperature extremes characteristic of a continental climate; and the southern Tatra and Sudety mountain ranges create their own orographic precipitation patterns and Alpine-like conditions. This climatic complexity means that a single national average rarely tells the full story — station-level data is essential for understanding Poland’s true weather variability.
Through Climate Explorer, you can access this authorized open data to visualize:
- Temperature Extremes: Monitor winter cold waves in Eastern Poland or summer heat events in the western lowlands.
- Precipitation Patterns: Detailed rainfall and snowfall data, essential for flood risk analysis in river basins like the Vistula and Oder.
- Wind Dynamics: Wind speed and direction data from synoptic stations, critical for understanding storm patterns and renewable energy potential.
- Snow Cover: Snow depth and fresh snowfall measurements, vital for winter hazard assessment and water resource planning.
Unique Value: National Coverage Across Weather and Snow
Standard global datasets often have limited coverage for Poland. By connecting directly to IMGW-PIB open data, this tool provides:
- National Coverage: Access to synoptic and climatological stations across all Polish regions (voivodeships).
- Multi-Resolution Data: Hourly, daily, and monthly observations from the same station network.
- Quality Flags: Integrated data quality indicators that help assess measurement reliability.
Why This Data Matters
Access to long-term, station-level weather records is not just an academic exercise — it underpins critical decisions across multiple sectors in Poland and the wider region:
- Agriculture & Food Security: Farmers and agronomists rely on historical temperature and precipitation patterns to plan sowing and harvest dates, select crop varieties, and manage irrigation. Analysing frost-free periods and growing degree-days from IMGW stations helps optimize yields in a changing climate.
- Flood Risk & Water Resources: Poland’s major river basins — the Vistula (Wisła) and the Oder (Odra) — have experienced devastating floods, most recently in 2024, 2010 and 1997. Daily and hourly precipitation data from IMGW stations feeds hydrological models that forecast flood peaks and guide dam operations, reservoir management, and civil protection planning.
- Renewable Energy: Wind farm developers use multi-year wind speed and direction records to assess energy potential at candidate sites. Likewise, solar irradiance estimates depend on sunshine-duration measurements from the IMGW network.
- Urban Planning & Public Health: Cities like Warsaw, Kraków, and Wrocław use temperature extremes data to design heat-action plans, evaluate urban heat-island effects, and protect vulnerable populations during cold spells or heat waves.
- Climate Research & Education: Long observational time-series are the backbone of climate trend analysis. Researchers use IMGW records to detect shifts in seasonal patterns, changes in snow-cover duration, and the increasing frequency of extreme weather events across Poland.
How to use this tool
- Map Navigation: The map shows active IMGW stations across Poland. Click a marker to select it.
- Search by Name: Use the sidebar search box to quickly find a specific station.
- Filter by Resolution: Use the Temporal Resolution selector to switch between Hourly, Daily, and Monthly data modes.
- Date Range: Adjust the date picker to select your period of interest. Limits apply depending on resolution to ensure performance.
- Visualize: Once a station is selected, the Dashboard loads interactive charts for temperature, precipitation, wind, pressure, humidity, sunshine, and snow. Switch to the Data tab to inspect numeric values and export to Excel.
How to Interpret IMGW Observations
This explorer is best read as a tool for understanding how weather behaves across Poland’s contrasting regional settings: Baltic coastal zones, central lowlands, major river basins, uplands, and the southern mountain belt. Because the values come from station observations, local siting, elevation, snow cover, and exposure can strongly influence the patterns you see.
When interpreting the page, keep these points in mind:
- Resolution Changes the Story: Hourly data is best for short-lived changes and day-scale structure, while daily and monthly views are better for broader seasonal and historical comparisons.
- Regional Geography Matters: Coastal influences, continental air masses, river valleys, and mountain effects can produce strong differences between stations even under the same larger-scale weather regime.
- Snow and Cold-Season Context Matter: In Poland, winter conditions can shape temperature, precipitation phase, and snow depth very differently from one region to another, so cold-season interpretation often benefits from combining several variables.
- Station Types Differ: Synoptic and climatological stations do not always report the same parameter set or cadence, so comparisons should take station type and record coverage into account.
- Use Multiple Variables Together: Temperature, precipitation, wind, humidity, sunshine, and snow usually make the most sense when read together rather than as isolated charts.
What This Explorer Is Best For
The IMGW explorer is particularly strong for analyzing station-level weather and climate patterns across Poland, comparing regional contrasts, and exploring multi-parameter records from the national network. It is less suitable for continent-wide live monitoring or global long-term comparison, where tools such as the EuroMeteo Explorer, GHCNh Explorer, and GHCNm are better fits.
This explorer supports Hourly high-resolution data alongside Daily and Monthly resolutions. Use the resolution selector in the sidebar to switch between modes. Note that available parameters vary by station type (synoptic vs. climatological) and historical period.
Need more help? View the full IMGW User Guide for detailed instructions.
Data source
- Institute of Meteorology and Water Management (IMGW-PIB): https://danepubliczne.imgw.pl/.
Frequently Asked Questions
What is IMGW-PIB?
IMGW-PIB (Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy) is Poland’s national meteorological and hydrological service. It is responsible for weather forecasting, climate monitoring, flood warnings, and publishing official meteorological data for the entire country.
How far back do IMGW records go?
Many IMGW synoptic stations have continuous digital records starting from the 1960s, with some stations holding data from the early 1950s. Monthly summaries for select locations extend even further. The explorer displays all data periods available through the IMGW open-data portal.
Is the data free to use?
Yes. IMGW-PIB publishes its observational data as open data on danepubliczne.imgw.pl. This explorer fetches and visualizes that data without modification.
What is the difference between synoptic and climatological stations?
Synoptic stations are primary, high-instrumentation facilities that report at least every three hours (often hourly). They measure a full range of parameters including pressure, visibility, cloud cover, and weather codes. Climatological stations form a denser but simpler network, typically reporting once or twice daily with core parameters like temperature, precipitation, and snow depth.
What specific weather parameters are tracked by Polish synoptic stations?
The IMGW-PIB synoptic network records a comprehensive suite of atmospheric variables. Beyond standard air temperature and precipitation totals, these stations document wind speed, wind gust profiles, wind direction, relative humidity, barometric pressure, sunshine duration, snow depth, and fresh snow cover.
Can I download IMGW data from Climate Explorer?
Yes. After loading a station and date range, switch to the Data tab on the Dashboard and click the Export Excel button to download the dataset.
Browse featured IMGW pages
Quick links to curated Polish station pages from the IMGW climate explorer.