Portugal's Algarve region
The northern regions of Portugal might be overcast and chilly for much of the winter, but the Algarve, in the south of the country, enjoys a milder Mediterranean climate throughout the year. Summertime means that the Algarve's beaches and towns are filled with tourists from elsewhere in Europe. In the winter, however, this region is much less crowded. Activities like sea kayaking, trekking along the ruggedly beautiful sections of coastline, hiking in natural areas like Parque Natural da Ria Formosa, and exploring the history-infused towns in the region can be enjoyed at any time of year. Low season prices are almost ridiculously cheap compared to summer peak rates, so frugal travelers can really turn up the savings at this time of year.