Individual analysis by river basin

Tapajós River Basin

Updated on August 20, 2025

Accumulated precipitation vs climatology

30 days
chart

Comparison between climatological quantiles and observed accumulation.

Anomaly and trend

14 to 28 days
chart

Anomaly, forecast and observed indicators.

Basin highlights

The climatology of the period under analysis indicates rainfall with records varying between 21 and 30 mm being considered normal (reference quantiles 42.5% and 57.5%). On August 20, 2025, 34 mm of average accumulated precipitation was observed over the basin in 30 days, the calculation of the average of the categorized anomaly index in the basin area the value of 0.5, classifies the basin as tendency to rainy condition. In the coming weeks, climate behavior indicates a increase in rainfall volumes, the sub-seasonal forecast model suggests behavior close to normality or a tending to be rainy.

Climatology

21 mm - 30 mm

Observed 30 days

34 mm

Anomaly index

0.5

Basin classification

tendency to rainy condition

Forecast

behavior close to normality or a tending to be rainy