The districts of Évora, Faro, Setúbal, Santarém, Lisbon, Leiria, Beja, Castelo Branco and Portalegre will be under a yellow warning from 9pm today, extending until Friday.
The IPMA has also placed the districts of Porto, Viana do Castelo and Braga under a yellow warning until 09:00 today due to sea unrest, with southwest waves measuring 4 to 5 metres in height.
The Institute predicts for today on the continent generally very cloudy skies, and rain, more intense at the end of the day in the Center and South.
Minimum temperatures will range between 07 degrees Celsius (in Bragança and Guarda) and 15 (in Faro) and maximum temperatures between 10 (in Bragança) and 18 (in Santarém, Leiria and Faro).