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 April 28 to May 27, 2026, below-average rainfall resulted in a precipitation deficit along the main course of the Amazon River in Peruvian territory, as well as in the watersheds of the Abacaxis, Aripuanã, Coari, Guaporé, Içá, Iriri, Japurá, Javari, Ji- Paraná, Juruá, Juruena, Jutaí, Madeira, Mamoré, Napo, and Purus rivers, Tapajós, Tefé, Teles Pires, Xingu, and the main course of the Solimões River; rainfall above normal levels was recorded in the Curuá Una and Marañon river basins, the left-bank basins of the Amazon River in the northeast of the state of Amazonas and the northwest of the state of Pará, and the Ucayali River basin; rainfall close to normal levels recorded over the main course of the Amazon River in Brazilian territory, the Beni and Branco river basins, and the left-bank basins of the Amazon River in northeastern Pará State and the Rio Negro basin. The multi-model indicates, for the period from May 27, 2026, to June 2, 2026, a forecast of rainfall below climatological norms over the basins of the Abacaxis, Aripuanã, Beni, Curuá Una, Guaporé, Iriri, Javari, Ji-Paraná, Juruá, Juruena, Madeira, Mamoré, Marañon, Tapajós, Teles Pires, Ucayali, and Xingu; rainfall is forecast to be above normal along the main course of the Amazon River in Peruvian territory, the Branco, Içá, and Japurá river basins, the basins on the left bank of the Amazon River in the northeast and northwest of the state of Pará, the Napo, Negro, and Tefé rivers, and the main course of the Solimões River.