SPEI web logoTools


The SPEI R library allows computing the SPEI and includes a set of additional functionalities and options. It can be obtained from the Comprehensive R Archive Network, CRAN. See more info and check the latest developments in the package’s GitHub page SPEI logo.

A standalone software has been developed, too, although the code is no longer maintained so the R library is recommended for most users. The C source code and binaries can be found at: