Portugal is set to see a gradual rise in temperatures from this Saturday. The Portuguese Institute for Sea and Atmosphere (IPMA) has raised a yellow warning for nine districts (source in Portuguese).
For this Saturday three districts are under a yellow warning: Coimbra, Leiria and Lisbon. On Sunday, the warning is extended to Setúbal, Santarém, Aveiro, Porto, Braga and Viana do Castelo. The alert will remain in force in these nine districts at least until eight o'clock on Monday evening.