Alas, IPMA has mentioned that temperatures will increase excessively across Portugal..

Portugal is on fire: Thermometers will hit 40°C! That dry, oven-hot feeling that hits you while walking on the street, that weather is literally affecting the country as of this week. By the afternoon, temperatures are climbing. We will be well above the values ​​we are used to for this time of year. Yellow alert has been officially issued. Thermometers are expected to last up to 40°C almost everywhere on the mainland except the Algarve. So what's behind this sudden burst of heat? A warm air mass is shifting towards us from the inner parts of the Iberian Peninsula, that is, directly over Spain. As soon as the wind turns east, it will carry this warm air directly to us. It's not just the daytime heat; Dry air and extremely low humidity will begin to make themselves felt starting from the night hours. The real big temperature jump will occur on Monday. The yellow alert issued by IPMA is valid from 09:00 on Monday morning and will continue until 18:00 on Tuesday evening. It looks like the heat will continue to swelter until Wednesday, especially for those living in the inner regions. After the middle of the week, temperatures are expected to gradually decrease to around 30°C. Don't let anyone be fooled by the fact that the weather is not very windy. Extremely high temperatures combined with very low humidity unfortunately make it the most dangerous ground for forest fires. Fire risk will be at "highest" or "very high" across almost all of the mainland on Monday and Tuesday. When spending time outside, walking or hitting the road, it is essential to take precautions, drink plenty of water and stay in the shade. We will try to spend these few days as cool as possible.