Meteocat, the Meteorological Service of Catalonia, has issued its highest heat warning for parts of Barcelona province as a spell of intense heat settles over the city and surrounding metropolitan area at the start of July. Forecasts for Barcelona point to daytime highs of up to 35C and nights staying exceptionally hot, conditions that can quickly become dangerous for older residents, babies and young children, people with chronic illness, outdoor workers and anyone without reliable cooling at home.

For residents and visitors, the immediate impact is practical as well as medical: the worst heat is expected to build between Saturday 5 July and Tuesday 8 July, with little overnight relief in dense neighbourhoods, and official forecasts show the heat continuing in Barcelona through the coming week. Tropical and torrid nights can make sleep difficult, worsen dehydration and place extra pressure on people already made vulnerable by poor housing, isolation or homelessness.

Highest warning level issued as temperatures climb

According to Meteocat, dangerous heat warnings were issued for 5-8 July in parts of Catalonia, with some inland areas reaching the top alert level for intense heat. Reporting by Metrópoli Abierta said Barcelona and its metropolitan area were entering a heatwave expected to bring temperatures above 35C and scorching nights for around 10 days.

Local forecasts published by Meteocat for Barcelona show maximum temperatures in the mid-30s over the next several days. Separate forecasts reported by betevé said Monday's high in Barcelona could reach 35C under clear skies, with the week dominated by intense heat.

Meteocat warned of dangerous heat between 5 and 8 July, while Barcelona forecasts point to very high daytime temperatures and persistently hot nights.

Catalan News, citing Meteocat, reported that the weather service had issued dangerous heat warnings for 5-8 July. Betevé also reported that Meteocat had raised some alerts in Catalonia to the maximum warning level for intense heat, reinforcing the severity of the episode.

Hot nights add to the health risk in the city

The overnight temperatures matter because Barcelona often retains heat after sunset, especially in tightly built neighbourhoods with little green space. Metrópoli Abierta linked the alert to a period of scorching nights in the capital, while previous local reporting has identified strong differences between neighbourhoods in exposure to heat and in residents' ability to cope with it.

For people who live in top-floor flats, homes without air conditioning, or buildings with poor insulation, the lack of overnight relief can be more dangerous than the daytime peak. The same applies to rough sleepers, care home residents and people taking medication affected by heat, who may need more frequent checks, water and cool indoor spaces.

  • Warning period highlighted by Meteocat and other local reports: Saturday 5 July to Tuesday 8 July
  • Forecast daytime highs in Barcelona: up to 35C
  • Expected pattern in the city and metro area: several days of intense heat and very warm nights

Residents who need updated local conditions can check Meteocat's official forecast for Barcelona, while people supporting vulnerable relatives or neighbours should watch for signs of heat stress, especially overnight and in the early afternoon. The official forecast currently shows the city remaining hot through the next eight days.

Primary sources: en.meteocat.gencat.cat. Reported by Source Text Link, catalannews.com, beteve.cat, Cedida per Miquel Galceran, lavanguardia.com, static-m.meteo.cat, Xavi Segura, PERE VIRGILI, EFE, Alejandro Laxio García, Metrópoli Abierta - Urban Life.