Brazil has hottest September in 63 years

The month of September 2024 surpassed last year as the hottest September since the beginning of the historical series measured by the National Institute of Meteorology (INMET), in 1961. This year, the month recorded an average temperature of 25,9°C, an increase of 1,7°C above the historical average, which is 24,2°C.

With this data, September of this year is the hottest on record in Brazil since 1961, surpassing September 2023, until then the hottest, with 25,8°C, or 1,6°C above average (Table 1).

It is important to highlight that, throughout 2023, September was the month that presented the greatest deviation (difference between the recorded value and the historical average) since 1961, as is the case in 2024, however there are still three more months until the end of the year and the expectation is that 2024 will be among the five hottest years.