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EPW TMY3
File conversion

Convert EPW to TMY3

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Is it possible to convert EPW to TMY3?
Yes - EPW converts to TMY3.

EPW is usually derived FROM TMY/TMY3 datasets. Conversion between EPW and TMY3 is a reformatting of similar hourly data and is handled by the EnergyPlus weather converter utility.

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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How to convert EPW to TMY3

Converting a .EPW file to .TMY3 lets you open the content in software that prefers the .TMY3 format, though some details may change compared with the original. We are still putting together the list of programs that handle .EPW files.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

About these formats

.EPW EnergyPlus Weather File

An EPW file is an EnergyPlus Weather file - a plain-text file holding 8,760 rows of hourly weather data (temperature, humidity, solar radiation, wind speed) for one location. Open it in…

Open .EPW details →
.TMY3 TMY3 File

A .TMY3 file is a data file used by specific software.

Open .TMY3 details →