For Saturday and Sunday, a significant increase in temperatures is expected, according to the IPMA.

On Saturday, in mainland Portugal, exposure to radiation will have a very high risk throughout the territory, with the exception of the districts of Viana do Castelo, Braga, Vila Real and Bragança, which will have a high risk.

On Sunday, the exception to the very high risk will only be for the districts of Viana do Castelo, Braga and Porto, which will have a high risk.

In view of the effects of exposure to ultraviolet radiation on health, the IPMA advises that in regions with very high risk, sunglasses with UV filter, a hat, t-shirt, parasol and sunscreen be used.