Access to the central massif of Serra da Estrela is once again passable on all its arteries, a Civil Protection source told the Lusa news agency.
According to the Beiras and Serra da Estrela Sub-Regional Emergency and Civil Protection Command, sections 11 (Piornos-Torre), 12 (Torre-Torre) and 13 (Torre-Lagoa Comprida) were reopened at around 08:00.
The three sections had been closed to traffic since 17:00 on Friday due to the snowfall.
Sections 1 and 2 of the central massif of Serra da Estrela had already been reopened to traffic on Saturday afternoon.
The districts of Bragança, Viseu, Vila Real, Braga, Porto, Viana do Castelo, Guarda and Castelo Branco were under a yellow warning until 09:00 on Saturday morning, due to forecasts of snowfall, the Portuguese Sea and Atmosphere Institute (IPMA) said.
The IPMA warned of snowfall forecasts above 1,100 meters or 1,200 meters, depending on the district, and also predicted snow accumulation of between five centimeters and 10 centimeters.