A mild winter
Mediterranean, temperate and warm, Formentera's climate is particularly mild in winter. Average temperatures never fall below 12°C! Yet the island is somewhat shunned by tourists... Once you've arrived, it's easy to see why: everything seems to be closed. A tranquility appreciated by the island's inhabitants. December, January and February are the quietest months. Lovers of tranquillity and long, solitary walks on the beach, this is your season. Although the weather may seem more unstable, the days are usually sunny, clear and limpid. A little wool may be enough to cover up in the afternoon, but in the evening, temperatures drop and nights are cool. Winter is the most overcast and rainy season, although showers are rare. Between December and January, water temperatures fluctuate between 14.6°C and 16.5°C.
Mid-season: pleasant but unstable weather
In autumn and spring, the climate is highly variable, but the temperatures are particularly pleasant, especially if you dread the heat of July and August. In spring, the island's flora blossoms, and light floods the landscape. Rainfall is sporadic, but can be heavy, and powerful thunderstorms sometimes offer surprising natural spectacles. But rest assured, it's extremely rare for it to rain all day. After the rain, the sun returns quickly, warming the earth and raising the mercury to 25°C. For several years now, the Balearics, and Formentera in particular, have been suffering from drought. Rainy days are becoming increasingly rare. Last but not least, it's possible to go swimming as early as May, or even as early as April for a cool dip, and as late as October for the less chilly. In May, the water temperature varies between 16.6°C and 21.4°C. In April, it's around 16.2°C, and in November around 19.5°C.
Warm, sunny summers
The tourist season kicks off in mid-May. At this time, the climate is already relatively warm and the sun can be blazing. The skies are often clear, the water remains cool (around 25°C), and the beaches are still peaceful. In the evening, however, it gets cooler, and a little wool becomes advisable. An easterly wind, also known as a levante, can sometimes blow. If you want to avoid the summer crowds, this is the perfect time to take advantage of more affordable rates, both for hotels and rentals.
June marks the start of the high season, with peak numbers in July and August. Some parts of the island become very crowded, prompting the authorities to impose restrictions, such as paying access to certain beaches, notably Illetes. The heat becomes more intense, sometimes overwhelming (up to 40°C). Unsurprisingly, August has the highest water temperature, averaging 26.3°C.
