San Pedro de Atacama's
weather shows features of a high desert type: i.e., sunshine all year round, low humidity levels and nighttime temperatures that can drop below zero Celsius.
In summer (December through February) daytime temperatures show 27° Celsius, with highs of 30°, whereas at night they drop to 16°. These figures vary in winter (June through August), with 22° in the daytime and 4° average at night with lows reaching 8° below zero Celsius.
The rainy season is from January through March. This time of year is known as the "High-Plateau" or "Bolivian" "winter".