Dark Skies Forecast for Atacama Desert

Atacama dark sky photography. Track astrophotography conditions in the world's driest desert.

This rule looks for true astronomical night, cloud cover no higher than 20%, visibility of at least 12 km, precipitation probability no higher than 10%, and either Moon illumination no higher than 35% or Moon altitude no higher than 10°. It does not calculate Galactic Centre or Milky Way core altitude; check a sky planner for the subject's position.

This forecast finds astronomical-night windows with low cloud and precipitation risk, good visibility, and either a dim Moon or one low in the sky. It flags workable dark-sky weather, not Milky Way core altitude; confirm the core's position with a sky planner.

The Atacama is the driest non-polar desert on Earth, with some areas receiving no measurable rainfall for decades. This extreme aridity, combined with high altitude and minimal light pollution, creates the clearest skies in the world—which is why the world's major observatories are located here.

What makes Atacama special for astrophotography:

• Exceptional clarity - The driest air on Earth means minimal atmospheric distortion
• Southern skies - View the Milky Way core and Southern Hemisphere objects invisible from the north
• High altitude - Locations above 2,400m reduce atmospheric interference
• 300+ clear nights - Near-guaranteed cloudless conditions year-round

The Milky Way core is best visible from February through October. New moon phases are essential for deep-sky work. The desert landscape offers unique foregrounds—salt flats, rock formations, and volcanic peaks beneath an ocean of stars. Consider guided astronomy tours to access the best dark sites.