Climate monitoring bulletin for the major river basins

The Amazon Basin

Volume 03 - Number 26

Publication date: June 25, 2025

Periodicity: Weekly

ISSN 2965-7857 • DOI 10.61818/78570426

Precipitation anomaly in the Amazon Basin
Legends

Current conditions

Maps of observed precipitation conditions, individual graphics by basin are produced from MERGE/GPM data generated by INPE/CPTEC, considering the period from de 2000 a 2024. Between May 27 to June 25, 2025, below-average rainfall in the monitored area resulted in precipitation deficits in the Abacaxis, Branco, Coari, Curuá Una, Iriri, Javari, Juruá, and Jutaí river basins, the left bank basins of the Amazon River in northeastern Amazonas State and northeastern Pará State, and the Negro, Purus, Tapajós, Tefé, Teles Pires, Xingu, and the main course of the Solimões River, rainfall close to normal on the main course of the Amazon River in Brazilian territory, the Aripuanã, Beni, Guaporé, Içá, Japurá, Madeira, and Mamoré river basins, and the left bank basins of the Amazon River in the northwest of the state of Pará. Rainfall above climatological norms was observed along the main course of the Amazon River in Peruvian territory, the Ji-Paraná, Juruena, Marañon, Napo, and Ucayali river basins. The multimodel indicates that rainfall above the climatological average will prevail over the Western Amazon in the coming weeks, affecting the river basins of the Abacaxis, Coari, Içá, Japurá, Javari, Juruá, Jutaí, Madeira, Marañon, Napo, Negro, Purus, Tapajós, Tefé, Ucayali, and the main course of the Solimões and Amazonas rivers in Peruvian territory. Below-average rainfall is forecast for the northern and northeastern extremes of the region over the Branco river basins and the left bank basins of the Amazon River in the northeast and northwest of the state of Pará.

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