The fire, which erupted on Sunday in the north of the Mediterranean island, was still raging Monday, as scores of firefighters battled to put out the flames.
Rainfall, a sharp drop in temperature and a change in wind direction meant the fire no longer posed a threat to villages nearby, the local emergency service said.
A house and a sheep barn were damaged by the flames, it added.
Wildfires in Portugal left 44 people dead earlier this month.
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