I am heading alone to Lisbon in December for Christmas. Is it sunny, rainy, snowy? We are trying to figure out what to wear and no clue how chilly it gets.
I cannot attest to every year but this year it was about 40-50 degrees. Most houses are pretty cold in winter. For house wear I would have 2 layers and some slippers. For outside wear, 3 layers, scarf and hat. It's cold but not freezing.
depends