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 September 2 to October 1, 2025, rainfall below climatological norms prevailed over Brazilian and Bolivian territories, characterized by a precipitation deficit over the main course of the Amazon River in Brazilian territory, the hydrographic basins of the Branco, Curuá Una, Guaporé, Iriri, Ji-Paraná, Jutaí, Mamoré, the left bank basins of the Amazon River in the northeast and northwest of the state of Pará, Negro, Tapajós, Tefé, Ucayali, Xingu, and the main course of the Solimões River; above- average rainfall is forecast for the main course of the Amazon River in Peruvian territory, the Abacaxis, Marañon, Napo, and Purus river basins; near-normal rainfall in the Aripuanã, Beni, Coari, Içá, Japurá, Javari, Juruá, Juruena, and Madeira river basins, the left bank basins of the Amazon River in the northeast of the state of Amazonas, and Teles Pires. The multimodel indicates below-normal rainfall for the coming weeks in the Aripuanã, Beni, Guaporé, Iriri, Ji-Paraná, Juruena, Mamoré, Tapajós, Teles Pires, and Xingu river basins; above-average rainfall in the Branco, Coari, Juruá river basins, the left bank basins of the Amazon River in the northeast of the state of Amazonas and in the northeast of the state of Pará, Negro, Tefé and the main course of the Solimões River.