From the Creators of the EPW


Respository for free weather data for building performance simulation

Aug 2017 - all data sets have been updated with 2017 ASHRAE design conditions (where applicable).

Several countries have added 2 or 3 character abbreviations for provinces -- shorter names -- but longer province names are also shown.

Newly added data sets: Canadian Weather for Energy Calculations (CWEC) 2016 and California Climate Zones 2016.

Additional statistics have been added in the .stat files: UTCI (Universal Thermal Climate Index), Additional Wind reporting, Psychrometric Chart Data, Sunshine/Daylight averages.

The site now has over 3,000 weather files.

Weather Files

WMO Region 1 - Africa

WMO Region 2 - Asia

WMO Region 3 - South America

WMO Region 4 - North and Central America

WMO Region 5 - Southwest Pacific

WMO Region 6 - Europe

WMO Region 7 - Antarctica

Note that some countries cross Asia and Europe boundaries.

See the News page for current status of what is available on this site and below for information about the source weather data.

Source Weather Data Sets

Click here for a description of the source weather data used on this site and the date it was last updated.


Climate.OneBuilding.Org, OneBuilding.Org and the authors accept no liability for the content, quality or completeness of any data posted on this site, or for the consequences of any actions taken on the basis of the information provided.