The second heat wave will peak tomorrow, but thunderstorms will develop in parts of the north and interior this afternoon, which may be accompanied by localized severe events.
Andrea Danta Meteor Spain 05/07/2026 15:46 5 minutes
This Sunday the second wave of summer heat will begin in Spain. but tomorrow, Monday, it will reach its climax. The strong ridge will maintain an exceptionally warm air mass over the Iberian Peninsula, which will contribute to very pronounced thermal anomalies. and temperatures exceeding 40°C in several regions.
In the video
Convective clouds will begin to develop during the warmer hours of the day tomorrow. They will be scattered and irregular, but may locally intensify.
The episode is expected to last until at least Tuesday. However, the approach of a high-altitude wave will increase atmospheric instability and, in combination with intense daytime warming, as well as the convergence of surface winds, will contribute to developing thunderstorms Monday afternoon in various regions of the north and interior of the peninsula.
The thermal dome will bring the wave to maximum intensity.
The peak of the second wave of summer heat will be reached on Monday. when a powerful thermal dome is established on the Iberian Peninsula.
This atmospheric configuration, associated with a powerful subtropical ridge, will contribute to the descent of air. that is, a downward movement that compresses and heats the air mass. This phenomenon will enhance atmospheric stability and maintain an exceptionally warm air mass over large parts of the country.
Thunderstorms developing tomorrow afternoon may slow the rise in temperatures. Depending on the model, they will be accompanied by strong gusts of wind. Source: HarmonieArome.es and AEMET.
As a result, thermal anomalies will be particularly noticeable, with temperatures ranging from 10 and 18°С above seasonal norms over large areas of Spain. This exceptional increase will affect much of the interior of the peninsula and confirms the remarkable nature of this episode for this time of year.
The maximum temperature will again exceed normal 40 °C in many areas of the center and south of the peninsula, as well as in the Ebro Valley. In the valleys of the city Guadalquivir And you Guadianatemperature can reach or even exceed from 42 to 43°C. L’AEMET therefore maintains numerous heat alerts throughout the Spanish peninsula as well as the Balearic Islands.
Thunderstorms will bring widespread lightning and powerful storms into the interior of the country.
Despite the dominance of the thermal dome, the atmosphere will not remain completely stable. An approaching weak trough from the Atlantic, accompanied by a slightly colder airmass aloft, will increase instability to the north and inland.
Thunderstorms will be irregular and scattered across different regions of the peninsula.
This factor, combined with the heat, converging winds and the influence of topography, will contribute to the development of convective clouds Monday afternoon. The first thunderstorm cells will begin to form from midday. but that’s in between 15 o’clock and 21 o’clock that they will reach maximum extent and intensity.
Models predict that the most noticeable phenomena will involve Galicia, Cantabrian mountain rangesurroundings of the city Central system, Castile and LeonIExtremature, Iberian system as well as the southeastern massifs. Localized showers, intense electrical activity (with extreme fire hazard), hail in some places and wind gusts that may exceed 80 km/haccompanied by probable downward gusts (downward gusts), are expected.
Anyway, these storms will be very irregular and unevenly distributed. Thus, they will not provide widespread relief from the heat, which will remain very intense in the coming days.
Mardi, a similar scenario is expected, with more storms developing in the afternoon after a day marked by still intense heat.