a mediados de

in the middle of

→ a
phrase Rare #42,601
in the middle of Used with a time period such as a week, month, or year. It usually refers to approximately the middle portion of that period.
SP: La tienda cerrará a mediados de agosto.
EN: The store will close in the middle of August.

En Tokio, la estación de frío comienza a mediados de noviembre.

In Tokyo, the cold season begins in mid-November.

Se murió a mediados de año.

He died around the middle of the year.

— Roma (2018)

Voy a tener a mi bebé a mediados de enero.

I'm going to have my baby in mid-January.

Salen muchos tipos de flores a mediados de abril.

Many types of flowers bloom in mid-April.

A mediados de la semana pasada.

In the middle of last week.