For much of the year, Chile’s Atacama Desert is defined by cracked ground, bare slopes, and an almost complete absence of rain. This month, parts of that landscape look very different.

Vast patches of violet and white flowers have appeared after unusually heavy rainfall linked to El Niño, reviving a natural phenomenon known as the “Desierto Florido,” or flowering desert.

The bloom is already visible in parts of the Atacama region, while Chilean authorities expect the display to reach its peak in October.

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The secret beneath the sand

Atacama rainfall crossed 180 millimetres in some areas | X (@fascinatingonX)
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Atacama rainfall crossed 180 millimetres in some areas | X (@fascinatingonX)

The reason lies beneath the desert floor. Seeds and bulbs from roughly 200 plant species can remain dormant for long periods, waiting for enough moisture to return.

When significant rain finally reaches the soil, some of these plants germinate almost at once.

This creates the sudden carpets of color that have made the Atacama bloom famous. The Chilean government says more than 200 plant species may emerge during the 2026 season, along with an ecosystem of insects and vertebrates that becomes active around the flowering plants.

Quite a lot of rain for a desert

More than 200 plant species can lie dormant beneath the Atacama Desert, waiting for the rare combination of moisture, heat and light | X (@cirosalla)
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More than 200 plant species can lie dormant beneath the Atacama Desert, waiting for the rare combination of moisture, heat and light | X (@cirosalla)

This year’s trigger has been the extraordinary amount of water reaching northern Chile. In some parts of the region, seasonal rainfall has exceeded 180 millimeters.

César Pizarro, head of biodiversity in Atacama at Chile’s National Forestry Corporation (CONAF), told AFP that such levels “had never been recorded before.”

The rain also penetrated deeper into the sand than usual, allowing more vegetation to emerge.

According to CONAF forecasts cited by Chile’s tourism agency Sernatur, the phenomenon could manifest across an area of up to 15,000 square kilometers, although that is a projection for the potential extent of the phenomenon rather than a claim that the entire area will be covered with flowers at the same time.

El Niño conundrum

El Niño is known for reshaping weather far beyond the Pacific | X (@theinformant_x)
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El Niño is known for reshaping weather far beyond the Pacific | X (@theinformant_x)

This phenomenon raises a question. Why did El Niño bring so much rain to a desert famous for its extreme dryness?

El Niño is a climate pattern associated with unusually warm surface waters in the central and eastern equatorial Pacific. That warming can alter atmospheric circulation, shifting rainfall and temperature patterns across distant regions.

The World Meteorological Organization said in September that the 2026 El Niño was strengthening and was expected to become a very strong event. NOAA’s Climate Prediction Center also put the chance of a very strong event above 90% for the Northern Hemisphere autumn and winter.

Beauty and the beast

The striking bloom, however, is only one side of this unusual weather.

The heavy July rains also caused deadly disruption elsewhere in Chile, with at least 13 people killed and around 4,000 homes destroyed or badly damaged.

In Atacama, the same unusual burst of moisture has instead activated dormant plant life and drawn visitors hoping to see the short-lived spectacle.

CONAF officials have urged tourists to remain on established paths, avoid stepping on plants, and not remove flowers or seeds.

This spectacular flowering relies on a combination of factors beyond just rainfall. As Gabriela López of CONAF put it, the flowering desert depends not just on rainfall but also on soil absorption, temperature, and solar exposure.

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