As winter settles over the UK, many are longing for warmth, sunshine, and open-air relaxation. Just a three-hour flight away, Portugal’s southernmost region, the Algarve, offers all of this—and more.

Portugal in winter is a revelation. While much of Europe shivers, this sun-kissed country offers mild days, breathtaking scenery, and a sense of calm that only the off-season can provide. For the ...