The districts of Viana do Castelo, Braga, Porto, Vila Real, Bragança, Aveiro, Viseu, Guarda, Coimbra, Leiria, Santarém and Castelo Branco will be under a yellow warning until 15:00 today.
The minimum temperatures will fluctuate between 12 degrees Celsius (in Guarda) and 18 (in Faro and Aveiro) and the maximum between 18 (in Guarda) and 26 (in Évora and Beja).