Before the system arrives, temperatures rise and the city of SP could see a new heat record for the year!
The state of Sao Paulo is under the influence of a strong dry air mass. On Tuesday (12th) the capital and practically the entire hinterland started with very sunny weather. Sea fog formed on the coast between the beaches of the southern coast and some points located in Baixada Santista and at 8 am visibility was reduced to only 200 meters at the Guarujá air base. In Baixada and on the north coast the weather is already sunny in several areas and this will facilitate the rapid increase in temperature.
The highlight of this Tuesday continues to be the heat. The temperature will be higher in the afternoon throughout the state of Sao Paulo, we will also face very dry weather. For most of the state, including the capital, critical levels of humidity are expected during the hottest hours of the day.
This Wednesday (13th), the areas of instability will expand to Southern Brazil and Mato Grosso do Sul. Part of this instability will also reach locations in São Paulo near Paraná and Mato Grosso do Sul (West of SP, Vale do Ribeira, south coast) from late Wednesday afternoon, with the possibility of rain showers that may be accompanied by lightning and strong gusts of wind, even before the rain begins – especially in the western part of the state – where gusts can range from 50 to 70 kilometers per hour.
Photo: San Paolo (SP), by Stefanie Tozzo
Prefrontal heat in Sao Paulo
In Greater SP and other areas, sunny, hot and dry weather will dominate. However, there are also conditions for some gusts of wind throughout the day, of moderate to strong intensity, which can vary from 40 to 60 km/h. The city of Sao Paulo could break a new maximum temperature record for the year, with a forecast of 33 °C. The previous record was recorded on 01/16/2023 with 32.5 °C at the conventional station of Mirante de Santana (INMET) – located north of the city.
The cold front increases humidity in the state
On Thursday (14th), a cold front advances and causes rain to spread over the state of SP. Locally there is a risk of heavy rain, with lightning and gusts of wind in all regions of São Paulo. On Friday (15th) this system goes away. In the Greater SP there is also a chance of drizzle early Friday morning, but this will taper off by the afternoon. Most of the state will have nice weather again on Friday, however, what will get a lot of attention today will be the temperature.
“Goodbye” to winter
We will have a “goodbye” to winter. Inland, a significant drop in minimum temperatures is expected! Friday will start with thermometers around 10°C-13°C in several locations! However, since the sun will also dominate during the day in most inland areas, the temperature will rise and warm up in the afternoon. In Greater São Paulo and other areas of the south and east of São Paulo, the temperature increases little during the day and the feeling of cold will be more persistent.
Weekend of great thermal amplitude
Even in the state of SP the weekend will have low minimums, especially on Saturday (16th), but the temperature will tend to increase during the day. For the next week, models predict a sharp increase in temperature in the state of SP, as well as in several areas of the country. Spring, which officially begins at 3:50 am (Brasilia time) on 09/23/2023, can start with intense heat in many locations.
Source: Terra

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