Brazil’s spring will have average rainfall, albeit not enough to fill reservoirs – meteorologists

RIO DE JANEIRO, BRAZIL – According to INMET’s (National Institute of Meteorology) meteorologist Danielle Ferreira, the season will start with rainfall concentrated in the west of the country’s northern region, in the east of Santa Catarina and Rio Grande do Sul, and in part of the Northeast. In other words, it will be more concentrated in the far reaches of Brazil.

In São Paulo, rainfall should be sparse until the end of the first half of October, explains Edson Nazário, meteorological technician from the São Paulo City Hall’s CGE.

“From then on, they should become regular and occur within the expected average for the season, which is 354.4mm for the period through December 21,” Nazário says.

Spring makes the transition between the winter drought and the summer rains. Thus, it features a combination of days that alternate between these features. CGE, INMET and Climatempo point out that September will end with below average rainfall and that despite the increase in rainfall during spring, it will not be enough to fill the reservoirs, especially in the state of São Paulo, as they will occur in isolated points.

“Despite the above average rainfall trend in important areas to supply reservoirs, the volume of rain will still be far below the necessary to regularize the situation,” says Climatempo in a note.

As for temperatures, the company points out that Brazil we will see average monthly temperatures within and above the normal average in virtually the whole country. It also states that there is a chance of a new heat wave, but that it will not be as intense as in 2020.

The La Niña phenomenon is another aspect raised by the specialists to be expected this spring. It consists of the cooling of the surface waters in the Pacific Ocean basin and its occurrence may cause significant changes in rainfall and temperature patterns across the planet.

“We have been monitoring water temperatures in this region and, from May through July, the values remained close to the average. However, in August, they cooled down to a level close to the onset of La Niña. Thus, the forecast for the coming months is that the phenomenon will materialize,” Danielle Ferreira says.

But the meteorologist points out that it will be short-lived and low intensity. “It won’t cause as many impacts as it did last year.”

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