Web Application Solar Irradiance and Climate

For global TMY or AMY calculations

Screenshot of Meteonorm App

The successor to Meteonorm 8. Rebuilt, from the ground up.

Try free Web App Demo

The next generation.

The new Meteonorm application features a project-based workflow that allows you to easily group related calculations. Need different output files? Want to check multiple surface alignments? Or maybe you want to see how your data looks in the future? Just duplicate the calculation and change anything you need. Export everything together. Simple, fast, productive.

calculation list screenshot

All inclusive.

calculation list screenshot

Meteonorm comes with all the bells and whistles you need. Automatic location metadata, typical (TMY) and actual (AMY) meteorological years, complex scenarios, station data around the world and exports in solar industry proven formats.

Made for you.

Configuring settings can be tedious. The new Meteonorm App was designed with you in mind. Start with automatic parameters and sane defaults and go deeper where and when you need it. With the built-in graphs, you can visually verify your data without going back and forth between applications. Spend less time getting your data, so you can spend more time building the future.

calculation list screenshot

At a glance.

TMY

Globally available typical meteorological years.

AMY

Actual meteorological years. Based on observational data.

A Strong Foundation

Expert curated data from 10,000 meteorological stations, 5 satellites, and climate reanalysis.

Extremes

Simulation of irradiance and temperature extreme scenarios. For robust risk assessment.

Climate Change

Future climate scenarios. Including the low, medium and high emission pathways SSP1-2.6, SSP2-4.5 and SSP3-7.0.

Bankability

Meteonorm is an industry-wide standard, trusted by experts.

Powered by Climate API

The web application relies on the Climate API, ensuring it uses precisely the same algorithms, data, and parameters.

File Formats

Export to industry-specific file formats (CSV, JSON, EPW, PVSyst, TMY3, Wufi/WAC, IDA ICE, PVsol, Polysun, TRJ, SIA, PHPP10).

Parameters

The Meteonorm Web Application delivers 50 parameters for a broad range of applications.

Available Variants

clear sky

horizon shading

Main Parameters

GHI

Global horizontal irradiance

DIR

Direct horizontal irradiance

DHI

Diffuse horizontal irradiance

DNI

Direct normal irradiance

GTI

Global tilted irradiance

BTI

Direct tilted irradiance

DTI

Diffuse tilted irradiance

PV

PV production

RR

Precipitation

Ta

Air temperature

Td

Dew point temperature

snow

Snow depth

Additional Parameters

Extraterrestrial irradiance

Extraterrestrial normal irradiance

Downwelling longwave irradiance

Upwelling longwave irradiance

Vertical longwave irradiance

Photosynthetically active irradiance

Radiation balance

Global illuminance

Direct illuminance

Diffuse illuminance

Linke turbidity

Aerosol optical depth

Cloud cover

Albedo

Surface temperature

Sky temperature

Wet bulb temperature

Mass mixing ratio

Relative humidity

Precipitable water

Driving rain

Atmospheric pressure

Wind speed

Wind direction

Solar elevation

Solar azimuth

Don't compromise,
plan for every scenario.

Let's do business together.

Basic

unlimited
TMY requests
2
AMY requests /year

per Subscription

Price/year (CHF)

320.–

Buy

Pro

unlimited
TMY requests
30
AMY requests /year

per Subscription

Price/year (CHF)

980.–

Buy

Expert

unlimited
TMY requests
unlimited
AMY requests /year

per Subscription

Price/year (CHF)

4200.–

Buy

Education

unlimited
TMY requests

10 seats included

Price/year (CHF)

260.-

Contact us

AMY Top-Up

Price (CHF)
120.–*

Buy

* The AMY Top-Up is only available in combination with an existing plan and offers data for one year.

Custom Offer

Have requirements that go beyond the standard? Whether you're an ambitious startup or a big company — we're ready.
Let's build the solution that fits you.

Contact us

TMY/AMY one-off datasets

If you need a TMY or AMY dataset for a specific location, but do not wish to purchase a paid plan, you can contact us for one-off datasets.

Order dataset

Meteonorm for Resellers

If you are looking to resell Meteonorm Web App subscriptions to your clients, you can contact us through our dedicated form.

Order as Reseller

Frequently Asked Questions

What is the Meteonorm Web Application and what benefits does it offer?

The Meteonorm Web Application is the modern, browser-based successor to Meteonorm 8. It allows users to generate, visualize, and export global climate time series (Typical Meteorological Year, TMY) and historical weather data (Actual Meteorological Year, AMY) directly in their web browser—without any software installation. Its key benefit is an efficient, project-based workflow for engineers, architects, and solar planners.

How does the Web Application differ from the Meteonorm Climate API?

Both products rely on the exact same scientific database and calibration algorithms. The Web Application is designed for planners and analysts who want to visually inspect climate data, organize calculations into projects, and export files for simulation software. The Climate API is built for software developers to automate data integration into custom software systems.

What advantages does the project-based workflow in the Web App offer?

In the Web App, related calculations can be grouped and managed in project folders:
  • Variant Comparison: Duplicate calculations with a click to compare different panel tilt angles or orientations at the same location.
  • Multi-Format Export: Generate multiple file formats for the same location in a single step.
  • Scenario Analysis: Compare present TMY climate data directly against future climate change scenarios (Future TMY based on IPCC AR6).
  • Bulk Download: Download all results in a single ZIP file containing metadata and a PDF summary report.

Can I visually verify data before downloading?

Yes, the Web App features built-in interactive charts for radiation and temperature profiles. Updating settings or location parameters instantly refreshes the visual preview, ensuring parameters are correct before exporting files. Try our Web App Demo!

Which file formats can be exported from the Web App?

The Web App supports all standard industry formats: csv, json, epw (EnergyPlus), pvsyst, pvsol, polysun, tmy3, wufi_wac (WUFI), ida_ice_v4, ida_ice_v5, trj (TRNSYS), sia_2028, sia_380_1, and phpp_10 (Passive House v10).

Which subscriptions are available for the Meteonorm Web App?

Licensing is based on annual subscriptions that include unlimited requests for typical climate years (TMY):
  • Basic: CHF 320 / year – Unlimited TMY requests; ideal for entry-level planning.
  • Pro: CHF 980 / year – Unlimited TMY requests + 30 AMY requests (actual historical data) per year.
  • Expert: CHF 4,200 / year – Unlimited TMY requests + unlimited AMY requests; for enterprise users and auditors.

Can I test the Meteonorm Web App for free before buying?

Yes, a free Web App Demo is available on the website demo.meteonorm.com, allowing users to test the interface, interactive charts, and project workflow directly in their browser.