A surge of cold air is set to disrupt Spain’s weather this Sunday, with dense clouds, a sharp drop in maximum temperatures, and the threat of heavy rain and hail in the north. The State Meteorological Agency warns of unstable skies and local extremes.
Thick clouds rolled over northern Spain on Sunday. A cold air mass pushed in fast. Daytime temperatures dropped sharply across much of the country. The State Meteorological Agency, Aemet, warned that the north would take the hardest hit. Afternoon storms and hail were possible. RTVE and AEMET both reported yellow weather warnings from 18:00 for Cantabria, Castilla y León, País Vasco, and La Rioja. The alerts focused on thunderstorms and hail risk.
Galicia and Asturias faced the worst of the unstable weather. By late afternoon, skies turned dark. Heavy rain was forecast for northwest Galicia. Isolated storms could break out. The risk zone stretched east into northern Castilla y León, La Rioja, and the eastern Cantabrian coast. Strong downpours and hail could hit as the day ended. RTVE’s midday weather update confirmed very cloudy skies and strong rain in northwest Galicia, with isolated storms possible.
AEMET specifically highlighted Vizcaya and Álava in the Basque Country as areas at risk for severe thunderstorms and hail on September 27, 2026.
Other regions saw a different story. While the west and north braced for rain, the Guadalquivir valley stayed hot. Temperatures there could top 35 degrees, bucking the cooling trend. In Galicia, the drop in maximum temperatures was sharp. The Cantabrian coast, though, might see a slight rise in daytime warmth. Minimum temperatures were set to climb in most places, except for a dip in the southeast and a clear fall in the Canary Islands. Telecinco and Infobae both noted that despite the general cooling, parts of southern and inland Spain would still see highs above 35°C.
Clouds covered the western half of the peninsula. Low clouds and mist lingered along the Mediterranean, the Strait, and the Balearic Islands. The rest of Spain saw patches of mid-level clouds, but little rain. In the Canary Islands, mid-level clouds mixed with high haze. Showers and isolated storms could hit the western islands.
Regional forecasts showed a patchwork. In the Basque Country, afternoon storms could turn severe in Vizcaya and Álava. Hail was possible. Northern temperatures could spike. Castilla y León and La Rioja expected scattered showers. The west of La Rioja faced a risk of strong storms. The Mediterranean coast, including Catalonia and Comunidad Valenciana, saw mostly high clouds. Only a slight chance of weak, scattered rain, mainly along the coast. In Andalusia, the weather split. The west could get light rain. The Guadalquivir valley stayed hot. The Strait and Cádiz province faced strong easterly winds. Gusts there could reach dangerous speeds.
Meteorological context from Euronews and Notimerica indicates that this episode marks the onset of a broader autumnal cooling, with a deeper Atlantic depression expected to bring further rain, wind, and a sharp temperature drop across multiple regions from September 28 onward.
Winds added more trouble. Moderate easterlies swept Alborán and the Strait. Some spots in Cádiz faced very strong gusts. The Canary Islands saw moderate winds from the east or northeast. The Balearic Islands expected moderate easterlies. Across the rest of the peninsula, Mediterranean breezes and shifting winds took over. Inland, winds leaned south. In the north, patterns kept changing.
This wild weather hit just as Spain prepared for the annual winter time switch, as reported earlier. The timing showed how fast things can change. Autumn’s swings were now in full view.
Sunday’s weather in Spain was all about sharp contrasts. Some regions braced for storms and a sudden chill. Others clung to summer heat. The split was clear. Rapid changes made it vital to watch local forecasts and stay ready. As autumn deepened, the next days would test roads, power lines, and daily routines. Residents and travelers needed to stay alert. Flexibility was key.
