Catalonia has active weather warnings for very high daytime temperatures and overnight heat, with the coast facing the highest risk. The Servei Meteorològic de Catalunya, known as Meteocat, says the alerts are expected to last at least until Wednesday.
Daytime highs could exceed 36C in parts of the region, while minimum temperatures on the coast may stay above 26C overnight. In Barcelona, forecasts point to nights above 25C, and in Tarragona, daytime temperatures are expected to rise well above 35C.
Civil Protection says the PROCICAT alert for intense heat and hot nights remains active while the episode continues. PROCICAT is the Catalan emergency plan used for major risks, including severe weather. Official forecasts and warning maps are available from Meteocat and the Department of Interior.
The Catalan health department warns that prolonged heat, including at night, raises the risk of heat-related illness. It says older people, babies, people with chronic conditions and outdoor workers are among those most at risk.
Residents are advised to avoid the hottest part of the day, drink water regularly and check on people who may be more vulnerable. That is especially important in coastal neighbourhoods and dense urban areas where buildings can hold heat overnight. The Department of Health also publishes guidance on heat risks at its official page.
Spain's national weather agency, AEMET, says temperatures could rise again from Friday. Forecasters say that could develop into a heatwave, but they have not confirmed that scenario yet. Readers can follow updates from the Generalitat as the situation develops.
