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UN weather agency warns strong El Nino to intensify from August

By Thomson Reuters Jul 31, 2026 | 11:18 AM

July 31 (Reuters) – The United Nations weather agency warned on Friday that a strong El Nino is expected ​to intensify starting in August, warning ‌that the phenomenon is likely to increase above-normal temperatures globally and significantly shift rainfall patterns.

• El Nino, a period of warming of sea ‌surface ​temperatures in the central ⁠and eastern Pacific Ocean, ⁠will continue to steadily intensify into a strong event during August–October 2026.

• In addition to a strengthening El Nino, a ​positive Indian Ocean Dipole (IOD) is forecast. An IOD is a climate pattern ⁠in the western Indian ⁠Ocean that becomes warmer on ​average, while the eastern Indian Ocean becomes cooler ​than average.

• Together, these phenomena can ‌amplify regional climate impacts including drought, floods and wildfire risk, particularly around the Indian Ocean basin.

• The agency, the World ⁠Meteorological Organization, said it is intensifying its mobilisation of information and support services to help countries ⁠anticipate and ‌minimise the impacts of El ⁠Nino.

• “El Nino is strengthening – adding ​fuel ‌to a planet already on ​fire with ⁠scorching heat domes, apocalyptic wildfires and record hot seas. Fossil fuels are fanning the flames of this crisis,” said UN Secretary-General Antonio Guterres.

(Reporting by Miranda Murray, editing by ​Thomas Seythal)