Spain faces a sharp weather shift this week as the prolonged heatwave of recent days gives way to a new Atlantic front. The Agencia Estatal de Meteorología (Aemet) has issued warnings for severe storms and hail, particularly in the northeast, while temperatures are expected to drop across much of the country. Despite the change, several regions remain under alerts for extreme heat during peak hours. Aemet’s national Meteoalerta system issues warnings for adverse weather up to 72 hours ahead and updates them as dangerous conditions develop.
The most impressive changes are expected in the north and west. The front will first reach Galicia, bringing overcast skies and rain that will gradually spread to other parts of the northwest. As the day progresses, cloud cover will increase across much of northern Spain. Elsewhere, conditions will vary before clearer skies return from west to east.
Aemet identifies the northeast as the area of greatest concern. Forecasts indicate that storms could intensify around the lower Ebro and Lleida, with a real risk of hail. Other parts of Catalonia and Aragón may also see locally heavy showers as afternoon clouds trigger further instability. This pattern echoes recent weather shifts in the Basque region, where rain and cooler air marked the start of August.
Maximum temperatures are set to fall across most of the peninsula, but the heat will linger overnight. Temperatures are still expected to exceed 35°C across large areas of the east and south, as well as in parts of the Balearic Islands. The situation remains more extreme in the Canary Islands: a persistent mass of hot air could push local highs close to 40°C, while elevated haze will continue to reduce visibility and add to discomfort.
Minimum temperatures will vary by region. Central and northern Spain may see slight overnight increases, while Andalucía will have cooler nights. Little change is expected elsewhere. Many towns, but, will still endure “tropical nights,” when temperatures do not fall below 20°C, especially in the southeast and Balearics. Some Mediterranean coastal areas may not dip below 25°C. In the Canaries, “equatorial nights” with lows above 30°C are possible, making restful sleep difficult in coastal zones.
Five autonomous communities remain under Aemet heat alerts during the hottest part of the day: Andalucía, Aragón, the Balearic Islands, Catalonia and Murcia. The heatwave is weakening, but the risk from high temperatures persists, particularly in the south and along the Mediterranean, where the front will bring less cooling.
Wind patterns will also shift. Galicia will see moderate southerly winds, while the southern coasts will experience moderate westerlies. Elsewhere, light winds will prevail and strengthen in the afternoon. Early morning fog banks are possible in northern and eastern areas, as well as in the Balearics. In the Canaries, the trade wind will continue, with strong gusts in exposed areas.
Aemet’s observation service provides hourly station readings alongside daily extremes and accumulated precipitation, helping distinguish measured conditions from forecasts as the front moves across the country. Spain’s climate is marked by sharp contrasts between regions: Atlantic fronts can bring relief from heat but also trigger severe storms, especially when hot air masses linger. High nighttime temperatures, known as “tropical nights,” complicate rest and can increase health risks. Heat, humidity and sudden storms can affect agriculture and infrastructure, disrupting daily routines particularly in coastal and island communities. Timely alerts from Aemet and local authorities remain impressive for public safety and planning as weather patterns grow more unpredictable.
