Heat from the dog days until after San Juan

BarcelonaThe first official day of astronomical summer, which arrived at 4:42 a.m., brought us full-blown temperatures. This Saturday, temperatures reached 40°C in Ponent, and exceeded 37°C in inland Girona, Central Catalonia, and inland Terres de l'Ebre.

The same heat and a slight drop in atmospheric pressure have led to the formation of storm clouds, which have locally left hail and stones, for example in Osona.

This Sunday, the mercury will drop slightly in some regions, but will rise again on Monday. The Midsummer Day weekend will be sweltering and fairly sunny, but with afternoon showers and thunderstorms in some areas, ahead of a generally placid and warm festival.

You'll find all the heat data and records at the end of this report.

Sunday: slight drop in mercury

Sunday morning will once again be tropical in many places, with the possibility of repeated torrid lows, with temperatures not falling below 25°C on the central coast. Highs will drop slightly in the West and especially in the northern third of the country, including the Girona region. Elsewhere, temperatures will remain similar to Saturday's. Minor nuances will occur in a context of generally very hot weather and marked muggy conditions on the coast. Highs will range from 32°C to 37°C, but up to 38°C or more in the West and the Ebro Valley. Therefore, the intense heat, more typical of the dog days, will continue.

All sunny and calm in the morning, with some coastal fog and a few patches of high, thin clouds. In the afternoon, the storm clouds will grow steadily, leaving scattered showers and thunderstorms in the Pyrenees, the Pre-Pyrenees, and Els Ports, but they may reach more inland areas of Catalonia and the Valencian Community until the evening. The afternoon will be more unstable, but the showers will not reach everywhere; they will remain far from the coast, where the sun and calm will continue to dominate.

Verbena and end of long weekend with more heat

The temperatures lost on Sunday will be recovered on Monday in the west, with very intense heat and the possibility of reaching 40°C again in the West. Suffocating temperatures everywhere, with markedly muggy conditions on the coast, tropical nights in many places, and locally torrid lows in some coastal areas. Temperatures will remain very high at least until Wednesday, but after that, the heat will be more bearable.

All of this, with a similar tone to the beginning of the long weekend. That is, calm mornings with general sunshine and afternoons with some irregular showers and thunderstorms in the Pyrenees, the Pre-Pyrenees, and nearby areas. The night of the San Juan festival will be very placid and warm, with the disappearance of the showers that fell during the afternoon in the north of the country.

The first 40°C is reached on the first day of summer:

This Saturday was the warmest day so far this year in many parts of Ponent, with 40°C recorded in Segrià. The start of summer has arrived with overwhelming heat, more typical of the dog days of July or August. The day was marked by the first 40°C of the summer season. The thermometer rose to 40°C in Segrià and to 38°C and 39°C in Pallars Jussà, La Noguera, and Pla d'Urgell. In the inland regions of Girona and Central Catalonia, temperatures hovered around 38°C. The highest values were:

• Alcarràs: 40.1 °C
• Torres de Segre: 39.6 °C
• Lleida-La Femosa: 39.3 °C
• Serazo: 39.2 °C
• Mollerussa: 38.3 °C
• Temp: 38.2 °C
• Artes: 37 °C
• Girona: 37 °C
• Vine: 37 °C
• Espolla: 36.6 °C
• Castellbisbal: 36 °C
• Vallirana: 35.7 °C

The first torrid night has also been recorded in several neighborhoods of the city of Barcelona, ​​​​with minimum temperatures that did not drop below 25 ° C. And a new record for water temperature has been registered, in this case in Lake Banyoles, where the 27.55 ° C measured on Friday by observer Josep Pascual is the highest value for a month of June since data began being collected in 2000. This record adds to the high of 25.2 ° C recorded at this time of year.