Where to find .epw weather data



Please, Can I get a epw file to Sana’a Yemen. Thanks to all.


Hi All,

For a location for which a weather file is not available from any source, and paying for proprietary services is not an option, is there a way to fabricate weather data?


Can Dragonfly help in this regard?

What I have come up with in my search on this is Urban Weather Generator from MIT that generate hourly urban air temperature and humidity values for a location based on weather data for that city. But what I am interested in is rather a full fabricated weather file.




Hi Devang,

I may be saying a huge stupidity, but if there is no other option… may it be worthy to take like 4 epws of the closest places that you can find and create your own file using the interpolation algorithms that meteonorm uses for the same problem? It will never be exact but… don’t know, better than nothing

Having a quick look I didn’t find the exact algorithms, but these 2 articles may help you





I’ve been looking for an epw file for the city of Santa Cruz de la Sierra - (biggest city in Bolivia but not capital), and there isn’t any. Nearby cities have really different situations, so is it possible to edit one nearby as template and create the one for Santa Cruz de la Sierra?

Best regards,


This is very useful! @mostapha!I have tried to download the epw from these websites,but I find I can only get the data of the lastest year.If I want to get the epw files over a series of years,how I can get them.