We are about to enter the last decade of August and therefore, at least from the weather, in the last part of the summer, which, despite the calendar in meteorology, ends on 31 August. What kind of weather awaits us in this last part of the meteorological summer? According to the most important modeling projections, will be a period with typically summer features, where the sunny and warm days will be the majority . There will, however, be a shorter phase, in which the real protagonists will be thunderstorms
Gradual extinction of instability
Until Monday 20 days will still be characterized by a striking instability in the afternoon, in which the Centrosud will be involved in particular; nevertheless, temperatures will remain above the norm and even without reaching the high peaks of the first half of the month, the heat will be felt from north to south in most of the country. The central part of the week will instead see the high pressure of courage and push with a larger decision on Italy, thus ensuring a greater presence of the sun and a further weakening of instability . The sunniest and most stable days are likely to be on Wednesday 22 and Thursday 23, when a little leftover instability in the afternoon will continue to exist in the Alps and Apennines, while the midtemperatures almost everywhere between 28 and 34 degrees will oscillate.
Abrupt return of storms
A definite change in weather conditions, however, seems to be outlined for the next weekend. Between Saturday 25 and Monday 27, the most likely scenario at the moment is the one that sees the passage of a disturbance that is capable of bringing many storms first to the north and then to follow in the central areas ( especially those on the Adriatic side)). At this stage it is not possible to exclude strong downpours and thunderstorms, especially in the Alps and Pre-Alpine areas. In this deterioration, the temperatures should also have a temporary fall, which will be felt especially in the northern regions
The summer ends with the return of the sun
The last part of August, from Tuesday 28 and during the last week of the month, sees instead the probable return of the high pressure, this time determined to ensure greater stability that would occasionally cause an afternoon of thunderstorms. At this stage, the long-term projections of the models indicate a more pronounced tendency of the atmosphere to give us days which are mostly sunny and relatively hot, perhaps without high temperature peaks, but probably with the annoyance of a little heat.
Source article: Col. Mario Giuliacci