The climate in the whole of this area varies according to the season of the year. In broad terms there are two different periods: the damp period, corresponding to winter and spring, when the weather is cold and there is lots of rainfall and snow, and the dry period, of summer and autumn, which is characterised by hot, dry days and cool nights and less rainfall but frequent claps of thunder in the summer.

This variety of weather allows different aspects of the same countryside to be discovered. For this reason, any time of the year is a good one to visit the countryside.
The complexity of the area’s mountains and its size, variety of countryside and range of heights above sea-level mean that it has extremely varied and rich examples of ecosystems that are typical of the Pyrenees.

The area around Caixa Catalunya's Les Planes de Son offers a wide array of landscapes including mountain top meadows and heaths, pine, fir and deciduous woodland, rocky outcrops and cliffs, ponds, streams and other aquatic environments, plus farming and livestock areas in which crops and pasture land are enclosed by natural or artificial borders.

For all of these reasons, it is not uncommon for a visitor to surprise a roe deer or fallow deer in the prairies; to contemplate the flight of the vultures, including the bearded vulture, or that of the golden eagle; to let themselves be enchanted by the song of the blue tits; and to be able to find the common frog in a pond.

Enter the black pine forests, where there are plants and shrubs like the rhododendron and bilberry. Shaded forests full of moss and lichen. Listen to the black woodpecker hammering on the tree with its beak, or make a host of butterflies head for the prairie at their rhythm.