On the mainland, the districts of Bragança, Guarda, Castelo Branco, Portalegre, Évora, Beja, Setúbal and Faro are under an orange warning from 01:00 am today until 23:00 pm on Wednesday due to the persistence of very high maximum temperatures.

The districts of Viana do Castelo, Braga, Vila Real, Porto, Aveiro, Viseu, Coimbra, Leiria, Santarém and Lisbon, which today are under yellow warning because of the hot weather, will change to orange at 00:00 on Tuesday and until 23:00 on Wednesday.

The IPMA also placed the south coast of Madeira under an orange warning until 23:00 on Tuesday due to hot weather, then changing to yellow until 23:00 on Wednesday.

The IPMA predicts an increase in temperature in the coming days, warning that the maximum may reach values above 40 degrees in some places.

According to the IPMA, "a generalised rise in maximum temperature values is expected in the coming days, with values that between the 21st and 24th will be close to 40°C in the South and interior North and Center regions, and may occasionally reach 44°C in some places in Alentejo and Vale do Tejo”.

During the night, minimum temperatures will also be high, “with values above 20°C (tropical nights) in much of the territory, and may not even drop below 25°C in some places in the Algarve, Alentejo and Beira Interior”.

The IPMA predicts that temperatures will only begin to drop in a generalized way from Friday, "reaching normal values for the time of year on the weekend of the 26th and 27th".