Summer says goodbye with few signs of autumn

BarcelonaWe have started the week with a heat spike that has made this Monday’s atmosphere feel fully summery. Thermometers have climbed up to 35 ºC in municipalities of the Alt Empordà, such as Roses, Cabanes, and Espolla. They have also reached or exceeded 34 ºC in other parts of the Girona regions, as well as the Tarragona coast, while in the interior of the Ebre they have exceeded 35 ºC. Values that are not at all typical for this time of year, which will continue this Tuesday, although the mercury will drop slightly. It will be the last official day of summer, as the astronomical autumn will officially arrive on Wednesday at dawn.

We will change seasons, but not the weather, as the afternoons will continue to be too warm for this time of year throughout the week. Only at night and in the early hours will we notice a chill thanks to the fact that the days are getting shorter, which allows thermometers to drop for more hours at night. All in all, sun and calm, as we will continue under the effects of the anticyclone. No major changes are in sight.

Tuesday: new day of sun and heat

This Tuesday we will wake up again to a generally cool morning and more mildness in coastal areas. In the city of Barcelona, tropical minimums will be recorded again due to the heat island effect, as well as in some points of the northern Alt Empordà due to the re-warmed tramontane wind.

But for one more day we will have to dress in layers, as in the middle of the day the heat will be summery. Maximums will drop, especially in points of the coast and pre-coast, after Monday's warm peak. But the warm atmosphere will remain, with many values from 27 to 33 ºC. On the other hand, towards Ponent and the Ebro valley, many maximums of 33 to 36 ºC will be repeated.

Thus, there will be total calm and radiant sun, in a new day to take advantage of and with very few nuances in the sky. Only some local fog may appear early on in the interior, as well as some decorative brushstrokes of high and thin clouds. Mistral and tramontane winds will be weak or moderate at dawn and in the morning in the Empordà and the Ebro.

Autumn will start with heat

On Wednesday at dawn, the astronomical autumn will officially arrive, but the weather will remain more summery than autumnal. The nights will be cool, but the afternoons will continue to be very warm for the rest of the week, with values above average. The anticyclone will remain intractable, with sun and absolute calm, and no rain in sight.

No significant changes are expected at least until the beginning of next week, when we will enter the month of October. Long-term models indicate that October will be rainy, so we will have to see when the long anticyclonic trend that will accompany us for many days breaks.