Peru's coastal regions endure extended heatwave as temperatures soar above winter norms

Lima and Callao have experienced a nocturnal heatwave lasting 70 consecutive nights, with temperatures 5‑6 °C above the seasonal average. Engineer Lourdes Menis of Senamhi noted, “Todo Lima y Callao vienen registrando temperaturas nocturnas por encima de su rango normal, con anomalías de entre 5 y 6 grados.” The episode began on 6 May and is linked to the El Niño Costero phenomenon.

Senamhi issued a danger‑level weather alert for 15‑17 July, warning of daytime highs up to 34 °C on the north coast, 29 °C in central coastal districts and elevated UV radiation. The agency urged people to stay hydrated, avoid prolonged sun exposure and follow official guidance.

From 14‑17 July the central coast, especially Lima’s eastern districts, is expected to see daytime temperatures reaching 29 °C, while coastal areas will remain between 21 °C and 27 °C. UV levels will be high, prompting recommendations for sunscreen, hats and adequate hydration.

In Tacna, daytime temperatures hit 22.5 °C, nearly two degrees above the winter norm, and nighttime minima stayed at 11.5‑12 °C. “Hoy hemos registrado una temperatura de 22.5 grados. Está casi dos grados sobre su valor normal,” said Senamhi’s Tacna chief Edualda Medina. The continued warmth is attributed to a moderate El Niño Costero that may intensify later in the year. Authorities continue to monitor conditions and advise the public to take preventive health measures.