The 2,000-year-old historic monument was deemed unsafe after an inspection in June found fragments were at risk of breaking away.
The swift intervention aims to prevent irreversible damage to various sections of the monument, as well as avoiding an accident waiting to happen, due to the high number of people who visit the Temple every day.
The Alentejo Regional Culture Board in collaboration with Évora Council are in charge of the intervention, which starts this week Friday, and is expected to last four months.
A spokesperson said the work is “not complex nor should it be very expensive”, with the restoration expected to come in at under €50,000.