“The weather in mainland Portugal will continue to be affected by a disturbed westerly current, which means that from today onwards we will be under the influence of a mass of air with tropical characteristics, with a high-water content. It is a very humid mass of air that will bring persistent rainfall, at least in the first part of the week, at least until the 11th [Wednesday],” she said.

According to the meteorologist from the Portuguese Institute of the Sea and the Atmosphere (IPMA), on Tuesday and Wednesday, mainland Portugal will experience episodes of more intense, continuous precipitation.

“For the 10th [Tuesday], orange level precipitation warnings have already been issued for Viana do Castelo, Braga, Porto, Vila Real, Aveiro and Viseu. A more critical period is expected here, with significant accumulated precipitation values, hence the orange level precipitation warning,” she said.

According to Ângela Lourenço, on Tuesday, the rain is expected to be lighter in Baixo Alentejo and Algarve.

"These episodes of more intense rainfall, particularly on Wednesday, may be accompanied by wind. Tuesday is not expected to be very windy.