According to the Portuguese Institute of the Sea and Atmosphere (IPMA), in Madeira and Porto Santo, the persistence of very high maximum temperatures extended the orange warning until 2pm on Sunday, the second most serious on a scale of three.

On the Azorean islands of Santa Maria and São Miguel, the IPMA extended the yellow warning, the least serious, until 00:00 on Saturday, due to the precipitation.

In six of the nine districts of mainland Portugal where the yellow warning due to heat is active, the IPMA has extended this warning until 9am on Sunday.

The districts of Setúbal, Santarém, Lisbon, Leiria, Aveiro and Coimbra are those affected.

For today, the IPMA predicts a rise in the maximum temperature, which will be accentuated on the North and Central coast, and a small rise in the minimum temperature.

Forecasts indicate that minimum temperatures will vary between 12ºC (Bragança and Braga) and 23ºC (Portalegre) and maximum temperatures between 27ºC (Guarda and Aveiro) and 37ºC (Santarém).