Santa Catarina will have above average temperatures until January

Epagri/Ciram's forecast for the months of November, December and January in Santa Catarina (SC) is for temperatures above the climatological average in the state. The hottest days will be in the Far West, West and Midwest regions.

According to Epagri/Ciram meteorologist Marilene de Lima, isolated cold spells may still occur, with temperatures close to or below 0°C and frost forming in the high areas of the Southern Plateau. Hot spells will be more frequent in December and January, with consecutive days of maximum temperatures above 30°C.

Rain

According to Epagri/Ciram meteorologist Gilsânia Cruz, the forecast for the quarter is for rainfall close to the climatological average in SC. “The rain should be irregular, associated with convection or afternoon heating, and in some locations the totals may exceed the average. During the period, heavy rain events should occur, with high totals in a short period of time, storms with strong electrical activity, hail and strong winds,” she says.

In November, the monthly average rainfall decreases compared to the previous month, with values ​​ranging from 130 to 180 mm. In December, the rains are concentrated especially in the afternoon and evening, in the form of typical summer showers. Accumulated amounts vary from 150 to 190 mm in Greater Florianópolis and from the Far West to the North Coast, and in other regions the volumes vary between 130 and 150 mm. The monthly average in January varies from 140 to 200 mm in the state.

During the quarter, precipitation episodes normally occur associated with the passage of cold fronts along the coast, the influence of low pressure systems and Mesoscale Convective Systems (SCM) that cause more intense rainfall in SC, especially in the Far West, West and Midwest.

In November, December and January, the activity of extratropical cyclones on the southern coast of Brazil decreases. Fog associated with low cloud cover, with reduced visibility, is also expected at night, early morning and early morning, especially in November and December.

Sea Surface Temperature

In September 2024, the Sea Surface Temperature (SST) was below the climatological average in the Equatorial Pacific monitoring area and, even though there was a slight warming, the condition is still neutral. In the November-December-January quarter, neutrality persists, with cooling that will not be sufficient for the configuration of the La Niña phenomenon.