Spain will experience a sudden change in temperature this week and will go from the typical summer heat to a weekend rather than autumn.

Map of temperature anomalies forecast for the weekend.

Although the forecasts indicate that during the first half of this week 40ºC will again be reached or exceeded in some areas of Spain such as certain sectors of the Guadalquivir valley, in the Granada basin and in Las Vegas del Guadiana, facing the next end weekdays temperatures could experience a significant decline in much of the country and there could be the appearance of snow in some places.

However, at points in the Tagus valley and in the interior of the eastern half, the maximums will also be quite high, with records that can touch 39ºC. On the Mediterranean coast, during the central hours of the day, temperatures will be around 30-35 ºC, with very high relative humidity and very warm nights. In some observatories they will not drop below 23-25 ​​ºC, something that makes night rest very difficult. In the extreme north, it will be difficult to exceed 25, according to the forecast of eltiempo.es.

As for rainfall, they are not expected except for some drizzle or isolated showers, especially in the northern half. No good news comes from the Canary Islands, since in the next few days it will continue to be very hot, to which the dust in suspension will be added. We will have to be very attentive to the risk of fires, which unfortunately are hitting some islands in these last days.

Change from Thursday

If the forecasts are maintained, as of Thursday the changes will arrive. We will be affected by polar air mass, and the wind will roll north. If the forecasts of the ECMWF model are fulfilled, the drop in temperatures will be notable or extraordinary, with values ​​that on Saturday would be 10 to 15 ºC below what would be usual for the time in many areas of the interior and north of the peninsula.

The rains could be intense on the north coast, the Pyrenees and Catalonia, and will eventually reach the Balearic archipelago. In a more dispersed way, they will affect the rest of the Mediterranean slope. And the anecdote is that snow can make an appearance in high areas of the Cantabrian Mountains and the Pyrenees, and it is not ruled out that a flake may fall on the peaks of the Iberian System.

However, it is not unusual at this time, especially in the Pyrenees. A nice way to close a climatological summer that has been characterized by very persistent extreme temperatures in some areas of the country.