The thing to do for any burn, immediately, is to grab a pack of frozen vegetables or an ice pack or ice in a baggie and apply it for 15 minutes to the burned area. This will reduce the pain, limit the spread of the burn, and be of great relief.
I would say that in the south (Algarve) the weather should be around 25Â°C, and still probably beach weather. In Lisbon it would probably be colder, probably around 20Â°C, so probably not the right weather to go to the beach. More info here: September Weather Averages for Algarve, Portugal, and September Weather Averages for Lisbon, Portugal. Views Â· View Upvotes.
However, winds tend to keep the temperatures down a little with coastal breezes. During the spring and autumn months from March to October the temperatures in Algarve average a pleasant 17Â°C to 19Â°C and this is accompanied with plenty of sunshine.he Algarve, the southernmost region of mainland Portugal, is the most popular tourist destination in Portugal, and one of the most popular in Europe. Because of the natural attractions of the city it receives more than 7 million foreign tourists per year.