Brazil’s mid-month Consumer Price Index (CPI) swung sharply back into positive territory in September 2026, rising 0.70% month-over-month after a 0.40% decline in August, according to data updated on 25 September 2026.
The move marks a clear reversal from August’s deflationary reading of -0.40%, indicating renewed price pressures midway through the month. On a month-over-month basis, the September print is being measured against August’s drop, underscoring the magnitude of the turnaround in the inflation trend.
The mid-month CPI is closely watched as a timely gauge of inflation dynamics. With September’s preliminary data signaling a firm rebound in prices, markets and policymakers will be assessing whether this marks the beginning of a sustained re-acceleration or a one-off correction following August’s unusually weak reading.
