Dataset of site index and other height growth parameters together with bioclimatic variables, extracted from the Worldclim 2 dataset, of Scots pine (Pinus sylvestris) plantations in the north-west of Spain. The dataset comprises two files: one includes plot measurements with site index estimations and the second includes height growth parameters estimated from stem analysis data, such as the mean growth in height or the height at the inflexion point of the Hossfeld growth curve.