Second Heatwave Grips Spain, Extreme Temperatures Expected

Spain is currently enduring its second heatwave of the summer, with high temperatures blanketing nearly the entire country. The situation is expected to worsen significantly on Monday, the peak of the current weather episode, with extreme temperatures likely to reach or surpass 42 degrees Celsius in many areas.

The Spanish State Meteorological Agency (Aemet) has extended its special heatwave warning. The episode, initially slated to conclude on Tuesday, will now persist until at least Wednesday, with a possibility of extending to Thursday. Fourteen autonomous communities are already under various levels of heat advisories on Sunday, with temperatures reaching up to 42 degrees.

By Monday, these advisories will cover the entire country. By Tuesday, large swathes of Aragon, Catalonia, and the Valencian Community face red-level warnings, indicating extraordinary danger, as temperatures are forecast to climb to 44 degrees Celsius in some locations. Even in the northern Cantabrian region, temperatures are expected to reach 37-39 degrees, potentially exceeding 40 degrees locally.

These extreme temperatures follow a Saturday where many parts of the country already surpassed 40 degrees, even before the official start of the heatwave. The first half of 2026 has already been recorded as the hottest in Spain since the historical series began in 1961, with temperatures averaging 1.6 degrees above normal. June 2026 was also exceptionally warm, ranking as the second hottest June on record.