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Change of season, but not of weather: autumn also begins with heat

The sun and the calm will continue to dominate, and no important changes are seen until next week

2 min
Red sky in Sant Quintí de Mediona, in the Alt Penedès.
Red sky in Sant Quintí de Mediona, in the Alt Penedès. Xavi Navas
Xavi Segura
22/09/2026 - 17:32 h
Unverified ENG translation
  • CAT
  • CAST
From summer heat to rain across the Catalan Countries: what can we expect this autumn?
Autumn is the rainiest season of the year in many regions.

Temperatures have dropped today and have not soared as much as on Monday, especially in the northeast and the pre-coastal area. Even so, they have once again exceeded 30 °C in many regions, especially in the northeast and inland. In fact, in the interior of the Ebro, they have once again hovered around 35 °C. It has been the last official day of summer, since this Wednesday at 02:05 a.m. we will officially enter the astronomical autumn. We will change seasons, but not the weather, as the warm atmosphere with summer air and radiant sun will remain. An anticyclonic calm that will accompany us for a few more days, as no significant changes are seen until at least next week.

Forecast map for this Wednesday morning.
Forecast map for this Wednesday morning. ARA

Wednesday: sun and heat

This Wednesday the atmosphere will be between cool and mild early in the day, with some tropical minimums that will be repeated in coastal stretches, especially in the Barcelona area. In the middle of the day, the heat will intensify a little more. Many maximums of 27 to 32 °C are expected, and 33 to 35 °C in the southern interior and in the west. Some hot early autumn hours.

Sun and calm will dominate with very few nuances. Only some low clouds or morning fog may be repeated in interior plains and in the pre-coastal area, as well as some decorative brushstrokes of thin clouds.

Forecast map for this Wednesday afternoon.
Forecast map for this Wednesday afternoon. ARA

Few changes until next week

The rest of the week will continue to be marked by the powerful anticyclone that embraces a large part of Europe. This will translate into days of absolute calm and radiant sun, with very few nuances. No rain is expected anywhere. Temperatures will rise further and will experience a new peak between Friday and the weekend, with summer heat and values clearly above average.

However, the maps are confirming significant changes for the coming week. The anticyclone will gradually leave and instability will increase, which could lead to several rounds of showers in any location, as well as a general cooling. There are still days to go, however, and all of this will have to be confirmed.

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