The various influences of the Andorran climate
Because of its considerable altitude - 1,996 m on average - one would tend to classify Andorra as a cold country. However, the orientation of its mountains, facing the Mediterranean Sea (200 km to the east), acts as a natural barrier to the passage of cold winds, acting as a thermal barrier. As a direct consequence, there are more sunny days (300 days per year) than in other regions of the Pyrenees. However, the country is also subject to the influence of the Atlantic Ocean, especially in terms of its rainfall regime: the south and south-western disturbances of Atlantic origin cross the Iberian Peninsula and are reactivated in the form of rain (or snow) when they come into contact with the Pyrenees. Average annual rainfall is recorded at just over 1,000 mm, with significant variations depending on the region of the Principality, with the north-east of the country being able to exceed 1,400 mm. The rainfall is reasonable overall, and is highest between October and May. Finally, the continental influence is felt in the variation of temperatures (from -2 to 24 °C). The average annual temperature remains Pyrenean: 12.6°C.
Seasonality and tourism
At low altitudes, winters are relatively mild for a mountain climate, with temperatures ranging from -2 to 7 °C. However, once you reach an altitude of 2,000 m, the winter becomes harsher and can last for up to six months, with temperatures of around -20 °C. The cold is particularly dry, and the snow cover can last until May. The image of the Andorran peaks covered in their white mantle thus continues until the beginning of summer, when the temperatures start to become more and more pleasant. Similarly, the late thawing of certain high altitude lakes offers the spectacle of splendid coloured shades. The summer period, as well as late spring and early autumn, is characterised by dry air, temperatures hovering around 23°C and typical mountain thunderstorms in the afternoon. The nights are still quite cool, however, so you'll need to pack some space in your suitcase for long trousers, jackets and sweaters. Touristically speaking, all seasons are good for a trip to Andorra, but the ski season and the summer months are the best times to enjoy the mountains in all their glory. From December to April, people come to enjoy the snowy slopes. From June to September, the green slopes. Summer remains much less crowded than winter and hotel prices are falling. If the tourist offer is reduced in the low season, it is still important. The months of May, June and September ensure tranquillity and good weather.
