Luckily the weather in the Algarve makes it suitable as an all year-round holiday destination. It has a very stable climate, which is influenced by both the Atlantic and the Mediterranean. It is warm and moderate and is probably the sunniest place in Europe. Year round, flowers and vegetation grow, thanks to the region's subtropical climate.
In the height of the summer it can get pretty hot, with temperatures in the low 30s, and while it can peak higher then this it tends to avoid the extreme heat of the Mediterranean. Despite the temperatures, humidity is rarely a problem.
Also the seemingly ever-constant Algarve sea breezes help to keep the temperature down. It tends to be windier in the West Algarve, as you approach the Atlantic and therefore a little cooler. Inland it can get stiflingly hot, although heading to the mountains of Monchique is a popular excursion. It has its own micro-climate and is a few degrees cooler. In the evenings the Algarve coastal breezes can make it a bit chilly, even in the summer.
As you can see from the chart below, the maximum temperatures in the Algarve vary between 16°C and 30 °C, with the temperature very rarely falling below zero in the winter.
One of the reasons that the Algarve is popular all year, is that there is not a lot of rainfall. During the summer you’re not likely to see any, with the majority being between November and March. When it does rain, it can rain for a few days in a row, which is not much consolation if it falls in the middle of your holiday.