Climate monitoring bulletin for the major river basins

The Amazon Basin

Volume 04 - Number 07

Publication date: February 18, 2026

Periodicity: Weekly

ISSN 2965-7857 • DOI 10.61818/78570407

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 2025. Between January 20 to February 18, 2026, below-average rainfall caused precipitation deficits along the main course of the Amazon River in Brazilian territory, the watersheds of the Abacaxis, Branco, Coari, Curuá Una, Guaporé, Iriri, Jutaí, Mamoré, the left bank basins of the Amazon River in the northeast and northwest of the state of Pará, Purus, Tapajós, Xingu, and the main course of the Solimões River; rainfall above climatological norms was recorded on the main course of the Amazon River in Peruvian territory and in the basins of the Içá, Javari, Marañon, Napo, and Ucayali rivers; rainfall close to normal recorded over the Aripuanã, Beni, Japurá, Ji-Paraná, Juruá, Juruena, and Madeira river basins, basins on the left bank of the Amazon River in the northeast of the state of Amazonas, and the Negro, Tefé, and Teles Pires rivers. The multimodel indicates below-normal rainfall for the coming weeks on the main course of the Amazon River in Brazilian territory, the Abacaxis, Aripuanã, Beni, Branco, Coari, Curuá Una, Guaporé, Iriri, Ji-Paraná, Juruena, Madeira, Mamoré, basins on the left bank of the Amazon River in the northeast and northwest of the state of Pará, Purus, Tapajós, Ucayali, and Xingu; rainfall above climatology is forecast for the Japurá and Negro river basins in the first week.

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