Summer says goodbye today with few signs of autumn

We have started the week with a new heat peak. Yesterday the atmosphere was fully summery, with thermometers climbing up to 35 ºC in municipalities in the northeast, such as Girona, Roses, Cabanes, or Espolla. 34 ºC were also reached or exceeded in other areas, such as the regions of Tarragona, while in the interior of the Ebro, temperatures exceeded 35 ºC. Notable are the almost 37 ºC reached in Aldover, in Baix Ebre, the highest value of Monday. These values are not at all common for the dates, and they will continue this Tuesday, although the mercury will drop a little. It will be the last official day of summer, as on Wednesday at dawn, the astronomical autumn will officially arrive.

We will change seasons, but not the weather, as midday will continue to be too warm for the time of year all week long. Only at night and in the early hours will we notice coolness 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 wake up again with a cool morning in the interior, but more mildness on the coast, pre-coastal areas and in elevated zones of the interior. Slightly tropical minimum temperatures have gained ground on the coast, and have been repeated 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 summer-like. Maximum temperatures will drop, especially in points of the coast and pre-coastal areas, after Monday's warm peak. But the warm environment will be maintained, with many values from 27 to 33 ºC. On the other hand, towards the West and the Ebro valley, many maximums of 33 to 36 ºC will be repeated.

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

Autumn will start with heat

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

No significant changes are seen at least until we enter next week, when we will head into the month of October. Long-term models indicate that October will be rainy, so it remains to be seen when the long anticyclonic trend that will accompany us for many days will break.