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 1998 a 2025. Between September 15 to October 14, 2026, below-average rainfall resulted in a precipitation deficit along the main course of the Amazon River in Brazilian and Peruvian territory, as well as in the watersheds of the Abacaxis, Aripuanã, Beni, Branco, Curuá Una, Içá, Iriri, Javari, Ji-Paraná, Juruá, Juruena, and Jutaí rivers, Madeira, Mamoré, and Marañon rivers; the left-bank basins of the Amazon River in the northeast of the state of Amazonas and the northeast and northwest of the state of Pará; the river basins of the Napo, Negro, Purus, Tapajós, Tefé, Teles Pires, Ucayali, and Xingu rivers; and the main course of the Solimões River; above-normal rainfall recorded only in the Guaporé River watershed; near-normal rainfall recorded in the Japurá River watershed. The multi-model indicates, for the period from October 14 to October 20, 2026, forecast of negative precipitation anomalies over the main course of the Amazon River in Brazilian territory, the Abacaxis, Branco, Curuá Una, Iriri, and Mamoré river basins, the basins on the left bank of the Amazon River in the northeast of the state of Amazonas, the northeast and northwest of the state of Pará, and the Negro and Tapajós river basins; Forecast of positive precipitation anomalies over the main course of the Amazon River in Peruvian territory, and in the watersheds of the Coari, Içá, Ji-Paraná, Jutaí, Madeira, Purus, and Tefé rivers; forecast of rainfall close to climatological norms (white) for the remaining watersheds.