The Louro River flows through Mos from north to south, making the municipality a valley region.

The key feature of the climate of Mos is the existence of two very different microclimates, a mountain and a valley, represented near Comber and O Porriño, respectively.

[2] Mos has a strong industry,[citation needed] and because of its geographical position between Vigo and the Portuguese border, it is crossed by many transport infrastructures.

Since December 2008, the municipality has been governed by Nidia Arévalo, former People's Party councilor after a vote of no confidence.

Four major roads cross southern Galicia Mos: the N-550 (Tui - A Coruña), AP-9 (Atlantic Highway), the A-52 (Vigo, Ourense) and A-55 (Vigo-Portugal).