Baiona is located on the southeast of Pontevedra, to the left bank of the Estuary of Vigo at its south end.

Longitude: 5º 70’ 0’’ and 5º 12’ 3’’
from Madrid meridian
Latitude: 42º 2’ 40’’ and 42º 7’
40’’ N.
Minimum altitude 0 m. sea level
Maximum
altitide 632 m Grova Height
Area: 34.7
square kilometres