Spanish and Galician
Apart from Spanish, Galician is spoken in Galicia. You’ll
probably find out that you can understand Galician without an excessive
difficulty. However, if you don't understand something, ask to any
person near you.
Galician is the official University language. You’ll see that almost
all the documentation, webpages, etc. are in Galician. However,
Galician is not a common language at the classes: almost 90% of the
classes are taught in Spanish.