Climate adaptation: UNEP puts the South's annual need at 305 billion dollars
· BehindLines newsroom
The UN Environment Programme (UNEP) published its adaptation gap report on 4 November 2026. Developing countries would need roughly 305 billion dollars a year by 2035 to adapt to climate change, while international public funding remains very far below that level.
The report's figures
According to UN News, international public adaptation finance reached between 28.2 and 31.7 billion dollars in 2024, about one billion more than a year earlier; growth is slowing. The Anadolu agency gives the same amounts. The 305 billion figure leaves out private-sector needs: according to UN News, the true bill could therefore be close to twice as high.
Even a tripling would not be enough
Both sources report that tripling this finance by 2035, a goal agreed at COP30 in Brazil, would cover only 20 to 29 percent of needs. UN News specifies that this would mean 85 to 120 billion dollars a year after inflation. The report also notes that the Glasgow goal (doubling to 40 billion dollars by 2025 from 2019 levels) could still be met, and that South-South flows rose from 3.8 billion in 2019 to 9.6 billion in 2024.
The UNEP chief's message
Inger Andersen, UNEP's executive director, says the world is not ready to adapt to current conditions, let alone an overshoot of 1.5 °C. She urges governments gathering at COP31, which opens next week in Antalya, Türkiye according to UN News, to raise their support. Anadolu reports that UNEP adds that money alone will not be enough: better institutions, better coordination and simpler funding procedures are also needed. Anadolu also notes that the first call of the fund for loss and damage drew 2.8 billion dollars in applications for an initial envelope of 342 million.
What remains unknown
The report is an estimate: real needs depend on the level of warming and on costs, and the private sector's share is not quantified. It is not yet known whether COP31 will adopt more ambitious commitments.