Irradiation data for
every place on Earth.

Easily accessible with Meteonorm.

Meteonorm Software

Meteonorm offers you simple access to accurate data for any place on Earth: Irradiation, temperature and more weather parameters are available.

Meteonorm contains worldwide weather data which you can retrieve in over 35 data formats. Be it as an Excel file for manual analysis or be it as an import to your photovoltaic, solar thermal or building simulation software.

Meteonorm contains the best foundation: 8'325 weather stations, five geostationary satellites and 30 years of experience. On this basis, state of the art interpolation models deliver global data with highest accuracy.

Meteonorm Features

List of all features / Video

  • Access

    Irradiation and other weather data for any location on Earth.

  • Global Data

    The database is fed by 8'325 weather stations worldwide as well as by five geostationary satellites with global coverage.

  • Highest Precision

    Built-in state of the art interpolation models deliver data for any location worldwide with a precision compareable to measurements.

  • Historical Data

    The standard is 1991–2010 for irradiation and 2000–2009 for other parameters; other periods can be selected.

  • Current Data

    Current data can be accessed online directly from the software. User data can also be imported.

  • Future Data

    Meteonorm contains several climate change scenarios, so you can also plan for the future.

  • Over 30 Parameters

    Global radiation, direct radiation, temperature, precipitation, humidity, wind etc. See the list of all parameters. 

  • Time Intervalls

    Meteonorm delivers monthly, hourly and even minute values.

  • Export Formats

    More than 35 output formats are available: CSV, TMY2, TMY3, EPW, PVSol, PVSyst, Polysun etc. See the list of all formats.

Weather Stations in Meteonorm




North America


Central/South America


Asia (with Russia)




Australia and Oceania





Products & Services


Meteotest is the company behind the product Meteonorm.


Meteotest was founded 1981 as an independent private company. Our team consists of approximately 40 scientists, engineers and software developers.

Meteotest is committed to ecological issues and a sound working environment since it was founded. The majority of the company is owned by the employees. This aspect is a guarantee for the long term successful strategy of our company as well as a high dedication towards our clients.

In this environment, the first version of Meteonorm was created in the early 80ies thanks to intensive research activities in collaboration with universities and the industry. Since then Meteonorm has been continously developed. Today it is considered as an industry reference for solar resources and is successfully used worldwide.

Meteonorm Software

Meteonorm is a comprehensive meteorological reference data base. It gives you access to a catalogue of meteorological data for solar applications and system design at any desired location in the world. It is based on more than 25 years of experience in the development of meteorological databases for energy applications. Meteonorm addresses engineers, planners, investors, architects, teachers and anyone interested in solar energy and climatology.

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Order online: Meteonorm Software

Meteonorm Web Service

Through the Meteonorm web service, Meteonorm datasets can be accessed online and thus directly be implemented in a website or standalone simulation tools

Since spring 2015, Meteonorm is also available in form of a web service. Through this web service, Meteonorm datasets can be accessed online and thus directly be implemented in a website or standalone simulation tools.

The web service is based on the same core (dll) and meteorological data as the software Meteonorm version 7.1. It delivers typical meteorological years for any location by entering latitude and longitude of a site. All Meteonorm parameters can be returned as hourly or monthly values. The values are provided in different formats like JSON, XML or CSV:

Additionally we offer a web service which is calculating the horizon line of the topography as well as the altitude.

Here you can find the factsheet of the web service including the API and the pricing.

The following companies are already using the web service:

Vela Solaris AG, Switzerland (Polysun software)
Firstsolar USA (online PV simulation tool)

Order online: Meteonorm Web Service

Measurement Archive

The measurement archive contains historical, unaltered data from meteorological stations or satellites out of our Meteonorm archive.

Meteorological stations

The measurement archive contains a selection of monthly mean values of a meteorological station. Archives are only available for the locations of measurement stations (no interpolations).


For better coverage, you can order a measurement archive of the satellite data contained in Meteonorm.

Order process

After your order, we will check the availability of the specified time period and parameters. The order will only be carried out after your reconfirmation.

Order online: Measurement Archive


A Meteonorm dataset is the right choice if you require location specific meteorological data once or occasionally for your assessments or calculations.

Typical year

A Meteonorm dataset contains values of the required weather parameters for a typical year in the selected time intervall (minute, 10-minute, hourly or daily values). The typical year corresponds to the long term mean and is therefore the reference for assessments and planning purposes.

Order online: Dataset


With the Horicatcher you can digitize the local horizon and shadowing situation efficiently and precisely. Import the horizon into Meteonorm for even more precise results.

From the horizon data, Meteonorm calculates limitations of the sunshine duration and irradiation due to obstacles. The result can be analyzed directly in the field.

Horizon Analysis in Seconds

The Horicatcher tool within the Meteonorm software calculates the sun's orbit, which is put in relation with the horizon. Meteonorm takes into account the reduced solar energy input, the sunshine duration and sun exposure.

Using meteonorm horicatcher, Meteotest also provides individual sunshine exposure analyses. Aus us for a quote!


A horizon mirror, the camera and the mounting device are attached to a regular photographic tripod. The built-in circular level allows a precise leveling of the device. The following components are included in the delivery:

  • digital camera
  • camera mounting device and horizon mirror
  • new: analysis software included in the meteonorm software (Version 7)

Order online: Horicatcher


We produce maps with any meteorological parameter for any region in the world between 62° S and 62° N.

Meteonorm maps are based on the Meteonorm database and the Meteonorm interpolation algorithms. As each map point is calculated separately, the production of a Meteonorm map requires a lot of computing power.

Direct normal (beam) radiation as well as global radiation maps are the most requested ones. However, we can produce maps for virtually any meteorological parameter.

Available resolutions

  • low resolution: 30 km
  • high resolution: 3 km (nur Europe)
  • very high resolution: 0.1–1 km

Additional information

  • standard format: PNG
  • very high resolution: max. 50'000 data points (horizon taken into consideration)
  • Price for maps with more than 50'000 data points upon request
  • Prices can be altered without notice
  • Surcharge for rastered formats: EUR 100

Order online: Map


For software producers: Your software can access Meteonorm datasets directly using an integrated plugin. Offer your clients added value!

Thanks to direct access to our precise data from your PV or building planning software, your client gets much more out of your software.


These software products and producers rely on Meteonorm plugins:

  • Polysun (Vela Solaris AG, Switzerland)
  • T*SOL/PV*SOL (Dr. Valentin Energiesoftware GmbH, Germany)
  • PVSyst (University of Geneva, Switzerland)
  • PHPP (Passivhausinstitut, Germany)
  • Lesosai (E4Tech Sarl, Switzerland)
  • Solarmax Simulation Tool (Sputnik Engineering AG, Switzerland)
  • IVT Simulation Tool (IVT Heat Pump, Sweden)
  • Hevacomp (Bentley, UK)
  • Transsolar (CSTB / Aiguasol, Spain)
  • Hottgenroth Software (Germany)
  • Tachion/Solar-Toolbox (Solar Campus GmbH, Switzerland)
  • PV Designer Software (Solmetric Corporation, USA)
  • HPC2 (Danfos Värmepumpar AB, Sweden)
  • Plan4[solar]PV (Gascad 3D Technologie GmbH, Germany)

Contact us for details!

We offer a range of possibilities (e.g. a DLL) to integrate Meteonorm in your software. Contact us for details and a quote!

Order online: Plugin


Our expertises are individually customized assessments of the solar irradiation at your project site and for your specific requirements.

Our experts analyse all available data sources and provide you with a trustworthy and independent first or second opinion on the solar irradiation.

Additional data sources

An expertise is the ideal supplement to the Meteonorm software. It takes external data sources into account which are not available through the software.

Usually, our expertises contain information on the following topics:

  • Solar irradiation (Gh, DNI)
  • Data quality
  • Distance to weather stations
  • Variability, trends
  • Uncertainty
  • Exceedance probability (P90/P10)
  • Climate change (IPCC scenarios)

Uncertainty analysis

An expertise contains a detailed analysis of the uncertainty of the solar assessment. The uncertainty mainly depends on the number and the quality of weather stations available in the vicinity of your site. Different data sources – including different satellite data – are compared and taken into account.

Build on our experience

Our expertise gives you access to 25 years of experience in solar resource assessment.


Order online: Expertise

Solar Cadaster

A solar cadaster is an inventory of each roof in a town, commune or region, its orientation, inclination and irradiation as well as the corresponding solar potential.

Based on Meteonorm

In collaboration with our GIS department, we offer solar cadasters for towns, communes and regions based high resolution digital terrain models a 3D town model. For each point on every roof, we calculate local shadowing (trees, neighboring buildings) as well as the topographic horizon. The terrain model's high resolution even allows taking complex roof structures into account. The irradiation data is calculated for each roof surface separately.


Our solar cadasters can be utilized to assess a town's or region's potential for the production of solar power. Additionally, the data can be combined with additional information, e.g. protected historical buildings, in order to further refine the potential analysis. Furthermore, a yearly solar power production can be calculated for single houses and even single roof areas.

Planning and communication tool

This information can be used internally (authorities, power companies) or published in a web application in order to sensitize house owners and citizens.

Order online: Solar Cadaster