Castellón Records Hottest May Night in 115 Years

The capital of La Plana Alta registered a low of 21.4 °C, surpassing historical records and showing a trend of earlier 30 °C days.

Generic image of a thermometer showing high temperature on the Mediterranean coast.
IA

Generic image of a thermometer showing high temperature on the Mediterranean coast.

The Valencian Community is experiencing an atypical heatwave for May, with temperatures exceeding 30 °C and tropical nights, as Castellón de la Plana records its highest minimum in 115 years.

The Valencian Community is experiencing an intense heatwave, atypical for May. On Friday, thermometers soared above 30 °C, marking the hottest day in a decade at this point in the year, according to records from the State Meteorological Agency (Aemet). These high temperatures were preceded by a tropical night, with lows above 20 °C in much of the Valencia and Castellón coastlines.
The capital of La Plana Alta, Castellón de la Plana, has broken a thermal record, experiencing the warmest night registered in over a century between January and May, with a minimum of 21.4 °C. Since at least 1911, no night before June had recorded such figures, surpassing the 21.1 °C noted on May 16, 1961, and the 21 °C on May 30, 2010. In Valencia, the minimum was 20.5 °C, an infrequent temperature for May, although with higher precedents like 22.4 °C on May 16, 1961.
During the day, thermometers surged in many areas, comfortably exceeding 30 °C. Municipalities in the interior of La Ribera Alta or El Camp de Túria recorded over 37 °C, such as Torís, Carcaixent, and Llíria. Xàtiva, in La Costera, registered the highest temperature in the Valencian Community with 37.5 °C. The provincial capitals reached 33.5 °C in Castellón de la Plana, 34.6 °C in Valencia, and 31.3 °C in Alicante. The mildest maximums were recorded in the interior of Castellón, such as in Castellfort (28.5 °C).
Aemet highlights that exceeding 30 °C in Valencia between January and May is uncommon, having occurred only eight times since 1920. Although the first 30 °C of the year arrived somewhat late in the city this year, a statistically significant long-term trend is observed: 30 °C days are occurring earlier each year. Between 1900 and 2026, the earliest date was March 2, 1987.