Rainy season in the Altiplano

The rainy season in the Altiplano, known in Chile as Andean winter, Altiplano winter or Bolivian winter, are rains that occur each season over much of the Altiplano plateau in the Southern Hemisphere summer. The precipitation during this season originates primarily from moist air masses coming from humid lowlands to the east of the Altiplano including those of the southern Amazon region.