The cold front will not approach until Wednesday
A dry air mass predominates over the southeast. This Monday, September 11, the weather will be stable and without rain throughout the state of Sao Paulo. The day will be very sunny and high temperatures in the afternoon. Maximum temperatures easily exceed 30ºC within SP. The same scenario is expected to repeat itself on Tuesday. And the relative air humidity is less than 20% in northern São Paulo. In Barretos, Ribeirão Preto and São José do Rio Preto, for example.
From Wednesday (13) onwards, the approach of a cold front is expected to bring instability to the west of SP, as President Prudente. In these regions the sun appears in the morning, cloud cover increases and it rains between the afternoon and evening. And the weather remains stable in the city of Sao Paulo and other regions.
The cold front advances across the southeast coast on Thursday and the entire state begins to rain. Southern Sao Paulo experiences the highest volumes and downpours at any time of the day, accompanied by wind and lightning. In the north and east of the region, these rains come in the form of showers with less accumulated volume.
On Friday in the Land the weather will tend to improve again between the afternoon and evening.
Figure 1: Temperatures in SP in the next few days (11/09 – 14/09)
Source: Terra

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