Italy Weather, Tuesday, September 22: strengthening winds and rain between Calabria and Sicily.

Tuesday, September 22, 2026, Italy finds itself split between two distinct weather situations. In the North and western sectors, high pressure ensures a predominantly stable and sunny day with mild temperatures. In contrast, the Adriatic side and especially the South experience more variable and unstable conditions.

Northeasterly currents from the Balkans bring clouds and scattered rainfall, concentrated in the morning over Puglia and in the afternoon over Calabria and eastern Sicily. The wind tends to strengthen progressively during the day, making the sea rougher on the central-lower Adriatic and the Ionian Sea. A more noticeable drop in temperature is recorded in the eastern sectors, directly exposed to the flow of cool air.

The weather situation on September 22, 2026, stems from a specific configuration of the Azores High, an area of high pressure that, during this period, settles over northern and western parts of Italy, protecting them. The change begins on the eastern flank of this system, which allows room for the entry of cooler air currents originating from the Balkans, a region in southeastern Europe.

These northeasterly currents, flowing toward Italy, encounter the Adriatic and Ionian Seas, which are still relatively warm for late September. The contrast between the incoming cool air and the milder sea surface creates instability, favoring the formation of clouds and precipitation, especially in directly exposed areas such as Apulia, Calabria, and eastern Sicily. This mechanism explains why the worsening weather is not uniform across the entire South but has an irregular distribution, also influenced by the region's topography.

This dynamic marks the first reduction in temperatures after a likely warmer and more stable period, along with a shift in atmospheric circulation. The immediate consequences primarily affect maritime navigation due to rougher seas and outdoor activities in the southern regions, where conditions can change rapidly from one area to another.