Nighttime temperatures across the Region of Murcia are failing to drop below 20 degrees Celsius, forcing residents to adapt their sleep routines as climate trends drive up overnight minimums faster than daytime peaks. According to data from the State Meteorological Agency (Aemet), municipalities including Murcia, Alcantarilla, and Cieza have recorded prolonged stretches of tropical and torrida nights during July and August.
The warming trend marks a clear departure from historical climate patterns in southeastern Spain. While daytime temperatures regularly exceeded 40 degrees Celsius in past decades, persistent warm nights have become increasingly common over recent years, altering domestic habits and increasing reliance on air conditioning.
Rising Minimums and Tropical Nights in Murcia
According to Aemet regional spokesperson Carlos Santos, nighttime minimums are climbing at a faster rate than daytime maximums, creating an ongoing challenge for public health and infrastructure. In the capital city of Murcia, temperatures throughout July and August consistently stayed above the 20-degree threshold required to classify a night as “tropical,” with numerous days failing to drop below 24 degrees.
Data shows that Murcia experienced 18 days where overnight temperatures remained above 25 degrees, meeting the criteria for torrida or equatorial nights. Meteorologists note that the region is approaching the threshold for “infernal” nights, defined as temperatures that stay above 30 degrees until morning—a category already registered in parts of Catalonia and the Canary Islands.
Coastal Impacts and Humidity in San Javier
Coastal areas are experiencing some of the most pronounced increases in nighttime minimums due to a combination of rising ambient temperatures, higher sea surface temperatures, and elevated air humidity. According to Aemet records from the weather station at the San Javier airport, coastal breezes now carry high humidity and heat rather than evening cooling.
San Javier recorded an average maximum temperature of 32.7 degrees Celsius, the highest since records began for the location. Furthermore, the number of nights where temperatures did not drop below 25 degrees reached 16 over the summer, compared to just three days during the same period a decade prior.
Highland Areas Also Affected
While higher-altitude zones in the Northwest and Altiplano historically offered relief from summer heat, that insulation is diminishing. In Caravaca, Aemet data shows 10 days this summer with minimum temperatures exceeding 20 degrees, compared to only two days recorded in 2016.
The lowest temperature recorded in Caravaca this season was 14.4 degrees Celsius, whereas minimums frequently dropped to 13 degrees a decade ago. Meteorological experts attribute these shifts to broad climatic trends that are gradually reducing the availability of cooler summer nights across the Iberian Peninsula.
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