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 November 4 to December 3, 2025, rainfall below climatological norms prevailed over the main course of the Amazon River in Brazilian territory and also over the rivers in the Bolivian part of the monitored region, characterizing a precipitation deficit in the hydrographic basins of the Abacaxis, Aripuanã, Branco, Coari, Curuá Una, Guaporé, Iriri, Javari, Ji-Paraná, Juruá, Juruena, basins on the left bank of the Amazon River in the northeast of the state of Pará, Napo, Purus, Tapajós, Teles Pires, Ucayali, and Xingu; rainfall above the climatological norm was recorded in the hydrographic basins of the Beni, Mamoré, Juruena, the left bank basins of the Amazon River in the northeast of the state of Amazonas and in the northwest of the state of Pará, and the main course of the Solimões River; rainfall close to normal on the main course of the Amazon River in Brazilian and Peruvian territories, and in the hydrographic basins of the Içá, Japurá, Jutaí, Madeira, Marañon, Negro, and Tefé rivers. The multimodel indicates above-normal rainfall for the coming weeks in the Beni, Branco Coari, Ji-Paraná, Juruá, Jutaí, Madeira, and Mamoré river basins, the left bank basins of the Amazon River in northeastern Amazonas State, and the Negro, Purus, Tefé, and main course of the Solimões River; Below-average rainfall is forecast for alternating river basins between weeks, in the first week on the main course of the Amazon River in Peruvian territory and the Abacaxis, Içá, and Napo river basins.