Brazil's Deadly Floods Expose Gender Disparity in Climate Disasters

The Human Cost of Climate Disasters

The water mark on Naira Santa Rita's wall told the story before she could find the words for it. High and brown, like a scar, it was the line left by the floodwater on 15 February 2022 – the night Petrópolis drowned. Within minutes, the mountain city she called home became a war zone. From her window, she watched bodies float past in the streets below. More than 230 people died that night, in what was until then Brazil's worst climate disaster.

But Santa Rita's story extends far beyond that single tragedy. She is one among millions in a global crisis that remains largely invisible: climate displacement, a phenomenon that disproportionately destroys women's lives.

Three Disasters in Three Years

Brazil has become a laboratory for this accelerating crisis. Three disasters in three years trace an upward curve of devastation: Petrópolis in February 2022, which killed 233 people; Recife three months later in May, when 130 people died; and Rio Grande do Sul in May 2024 – the state's largest natural disaster, affecting 2.4 million people across 478 municipalities, killing 183, and causing economic losses estimated in the billions of reais.

That February afternoon, Santa Rita, then 24, had cancelled her two-year-old son Cainã's medical appointment. The rain was intensifying. "The city becomes chaotic when it rains," she says. The decision saved their lives – two buses full of passengers were swept away in the city centre.

The Global Data on Climate Displacement

The numbers are staggering. Over the past decade, climate-related disasters have displaced 250 million people globally – equivalent to 70,000 people forced from their homes every day.

According to the UN high commissioner for refugees (UNHCR), more than 120 million people worldwide are now forcibly displaced. Of these, about 90 million live in countries with high or extreme exposure to climate risks, and half exist in the brutal intersection of conflict zones and severe climate threats.

In Latin America and the Caribbean – the region most exposed to extreme climate events after Africa – an average of 2.4 million people a year have been displaced within their own country over the past decade. And the future looks even darker: by 2040, the number of countries facing extreme climate risks is expected to jump from three to 65. By 2050, most refugee camps will endure twice as many days of dangerous heat as they do today.

Why Women Bear the Brunt

"With the intensification of climate change, a significant increase in cyclical and prolonged displacements is expected," warns Sílvia Sander, protection officer at UNHCR. "Women who return to disaster-prone areas face successive displacements – being forced to move again and again – making life reconstruction difficult. Each new climate event destroys resources, increasing dependence on humanitarian aid."

"You think you're safe in a building – you're not; it's an illusion," Santa Rita recalls. "I saw water coming in, not through the drain, but through the walls. You can't control water, tell it, 'Stop, don't come in.' You see it, and everything's already gone."

The Future Outlook for Climate Disasters

As climate change accelerates, the pattern of women being "the first to die" in disasters is likely to continue without targeted intervention. The intersection of gender inequality and climate vulnerability creates a deadly combination that requires specific policy responses.

Climate experts warn that without significant global action to reduce emissions and adapt to changing conditions, the number of climate-displaced people could grow exponentially, with women and children making up the majority of those affected. The situation in Brazil serves as a warning for other nations facing similar climate challenges.