Showers will be restricted to the northeast, with clearer areas elsewhere.
The tramontana and mistral winds will strengthen at both ends of the country.
BarcelonaThe unstable situation that began on Monday is reaching its peak, with intense and widespread storms that will also affect some coastal regions of the country next night and early morning, producing localized heavy downpours. Starting Thursday, the sun will gain ground in the south, and showers will become concentrated in the northeast, adding to the already abundant rainfall records (more data on the heat wave and storms is available at the end of this report).
Thursday: showers in the northeast
On Thursday, the mercury will drop slightly further during the early hours of the morning, but with tropical lows on the coast and below 20°C inland, with a cooler atmosphere. During the early hours, there will still be some storms on the coast, but the morning will be calm, with some cloudy periods and wind at both ends of the territory. During the afternoon, precipitation will reappear in the Girona region, locally accompanied by thunderstorms, which will reach the coast. The atmosphere will be similar to that of Wednesday at midday, with highs ranging between 26 and 28°C on the coast, 27 and 30°C inland, and 17 and 22°C in the Pyrenean valleys.
In this regard, the Catalan Meteorological Service maintains a warning of danger for intense rainfall, covering the regions of Barcelonès, Maresme, La Selva, and Baix Empordà during the early morning, and Gironès, La Garrotxa, La Selva, and Pla de l'Estany during the afternoon. In these regions, more than 20 mm of precipitation could fall in one hour, and the showers could be accompanied by thunderstorms and hail.
Friday: more stability
We'll be approaching the weekend with more stable weather, although showers will recur early in the morning in coastal areas and in the northeast during the afternoon. These showers will be strong only in the southern and western half of the country, with maximum temperatures rising slightly in the north and remaining similar to the rest of the country.
Heat wave and storm assessment
The heat wave we've experienced during the first two weeks of August has been intense and long-lasting, with many days of exceptionally high temperatures throughout the country. In fact, Sunday was the 16th day this summer that the Meteocat Automatic Meteorological Station Network reached or exceeded 40°C, making 2025 the year with the most 40°C days in Catalonia's recorded history. These are some of the notable highs from the episode:
- 43.8°C: Vinebre and Benissanet
- 42.4 °C: the Masroig
- 42.3 °C: Ribarroja Reservoir
- 42.2 °C: Ascó
- 41.8 °C: Lleida - La Fenosa and Torres de Segre
- 41.7 °C: Aldover and Limiana
- 41.6 °C: Albesa and Tremp
The arrival of cold air from high altitude caused the first widespread showers on Monday afternoon, locally accompanied by thunderstorms and hail or stones. The most notable rainfall was 77 l/m² in La Seu d'Urgell, 68 l/m² in Lake Redon (Aran Valley), 44 l/m² in Espot (Pallars Sobirà), and 29 l/m² in the Queralt sanctuary (Berguedà). During the second half of Tuesday, the rain was again concentrated in the western Pyrenees, with 52 l/m² in Sort, 37 l/m² in Lake Redon, and 33 l/m² in Pont de Suert.
This Wednesday, the rain was again intense in the same regions in the northern half of the country, although it also reached parts of the coast and the center. Highlights include 67 l/m² in Guixers (Solsonès), 45 l/m² in San Juan de las Abadesas (Ripollès), 36 l/m² in Lladurs, in Solsonès and 29 l/m² in the University Zone of Barcelona. All this means that in some places they exceed 100-120 l/m² in just three days.