October begins with summer temperatures: values up to 30°C in Sardinia and above the norm throughout Italy

The start of the month of October is characterized by the persistence of atmospheric conditions with temperatures higher than the seasonal climatological averages, which outline a diurnal thermal profile similar to that of the beginning of September. Lorenzo Tedici, media meteorologist at iLMeteo.it, confirms that among the highest values ​​estimated on the national territory are 30°C in Oristano, 28°C in Benevento and Florence, and 27°C in Rome and Savona, with temperatures above the norm also detectable in various areas of the Po Valley.

Marine thermal anomalies and the Euro-Mediterranean framework

The misalignment from seasonal average values also significantly affects the surface temperature of the Mediterranean Sea: the central Tyrrhenian basin records values of up to 26°C (about 4°C above the average for the period), while the remaining Italian marine areas average around 24°C.

The high heat accumulated by the sea basins, following a summer season characterized by marked thermal anomalies over Western Europe, confirmed by the findings of the European Copernicus service, constitutes an energy reserve that has contributed to the recent development of highly intense precipitation phenomena over southern France and eastern Spain.

Evolution for the weekend and medium-term trend

During the first weekend of October, stable atmospheric conditions and sunny weather will prevail over much of the Peninsula. The only exception will be represented by the internal areas of Sicily, where isolated showers may occur in the afternoon hours, within a local thermal context in line with the averages for the period (with maximums of 25-26°C in Palermo and Catania).

The simulations for the middle of next week indicate a possible change in circulation: an initial influx of cooler north-eastern currents, followed by the approach of an Atlantic wave cable, could favor a gradual increase in instability and a general reduction in thermal values.

In detail

SATURDAY 3. In the North and Centre: stable and mostly sunny weather. In the South and on the Islands: clear or slightly cloudy skies, except for isolated afternoon showers in the internal areas of Sicily.

SUNDAY 4. In the North, in the Center and in the South: stable and sunny weather over almost the entire country, with local daytime concentrations in the Sicilian mountains.

MONDAY 5. In the North, in the Center and in the South: stable and sunny weather over almost the entire country, with local daytime concentrations in the reliefs.

TREND. Persistence of the high pressure field in the first days of the new week; hypothesised an entry of cooler currents from the north-east and a subsequent Atlantic trough starting from Wednesday.