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.
Just bring layers. Late September is the most-perfect time for weather in Napa Valley. It may get far hotter than 80 during the day, but will always cool at night. Sturdy sandals and walking shoes highly recommended (not heels), and casual during the day is OK. Many visitors like to take it up a notch for fine dining ...