Overview

• The Agencia Estatal de Meteorología has declared the first official heat wave of summer 2025, activating warnings in 35 provinces with 18 at the orange alert level.
• Daytime highs have spiked to between 41 °C and 43 °C in southern regions such as the Guadalquivir Valley, while nighttime lows remain above 22 °C to 27 °C across interior and coastal areas.
• A persistent anticyclonic heat dome over Spain is anchoring a Saharan air mass and trapping heat, driving exceptional temperature swings.
• Regional health authorities from Murcia to Catalonia and Galicia have urged vulnerable groups—young children, older adults and patients with cardiovascular, respiratory or neurological conditions—to stay hydrated and limit sun exposure.
• Forecasts indicate the heat wave will last through at least July 2, with central, southern and northeastern zones possibly facing extended high temperatures beyond that date.