The anticyclone will begin to weaken starting this weekend.
Saturday will be cooler and the first light showers will arrive in some areas, and next week will be busier.
The calm weather of the last few days will continue today, Friday, with generally sunny skies, some morning fog and low clouds, and a contrasting temperature between the morning chill and the midday warmth. However, the weather will begin to change over the weekend. The passage of a weakened front will increase cloud cover overall, and some light showers or drizzles are expected, especially in the Pyrenees and Pre-Pyrenees. While light, the precipitation will be accompanied by mud, as the amount of dust suspended in the air from North Africa will increase. Temperatures will drop, and next week the high-pressure system will weaken further, increasing instability and bringing the possibility of more rain and snow.
Friday: absolute calm
The weather will remain very calm today, with generally sunny skies and some morning fog or low clouds in the plains and inland valleys. These will also appear in the northeast and other coastal and pre-coastal areas. As the day progresses, the fog will dissipate, and sunny conditions will prevail overall, although with more bands of thin clouds. Temperatures will be similar to or slightly higher, with a very mild temperature inversion in the morning and midday. Many highs will reach between 17°C and 22°C, locally higher.
First changes this weekend
Over the weekend, a weakened front will cross the region, increasing overall cloud cover, but little rain is expected. Only a few light, scattered showers or drizzles are possible, mainly in the Pyrenees on Saturday. While light, any rain will likely be accompanied by mud. Temperatures will begin to drop and return to normal. These will be the first signs of the anticyclone weakening, and instability will increase next week.
According to current weather maps, a low-pressure system will move between the Iberian Peninsula and North Africa, and depending on its position, it will bring varying amounts of rain to Spain. For now, widespread rain is expected by midweek. As the winds will be from the south, the weather will not be too cold, with a relatively high snow level of around 1,800 meters. This situation remains uncertain and will need to be clarified as it develops.