Peru's June 2026 Was Second Warmest on Record; Lima Faces High Winter Temperatures
June 2026 was the second warmest on record in Peru, with a national average temperature of 18.2°C, just 0.1°C below the 2015 record and 1.0°C above the 1991-2020 average. Lima experienced significant anomalies, with Campo de Marte reporting a 5.3°C positive anomaly in maximum temperature and Camay a 4.6°C anomaly in minimum temperature. The Peruvian National Meteorology and Hydrology Service (Senamhi) has issued a warning of increasing daytime temperatures along the central coast this week, with highs potentially reaching 29°C in eastern Lima districts like Ate and La Molina.
These unusual conditions are attributed to the persistence of warm waters off the Peruvian coast, linked to the El Niño phenomenon, along with the influence of northern winds and a weakening of the South Pacific Anticyclone. This combination is expected to lead to more clear skies and increased solar radiation. Senamhi advises avoiding prolonged sun exposure between 10 a.m. and 3 p.m., using sunscreen, wide-brimmed hats, and staying hydrated. Meteorologist Andrea Holguín explained that warmer ocean waters increase evaporation, creating warmer, more humid air masses, while the weakening anticyclone allows warm northern winds to bring this air inland, reducing cloud cover and increasing heat.
Holguín noted that while recent days saw cloud cover and drizzle due to a stronger anticyclone, its weakening has shifted the pattern to increased sunshine and higher daytime temperatures, making the current July temperatures near 29°C unusual for the season. She anticipates that above-normal temperatures may persist through July and August if El Niño conditions continue, warning of increased heat sensation and UV radiation exposure due to reduced cloud cover. Senamhi's projections indicate that maximum temperatures will remain above normal across much of the coast and highlands, with ongoing monitoring of El Niño 2026-2027 conditions.
The reported record-warm June temperatures in Peru, exacerbated by El Niño conditions, highlight the increasing frequency and intensity of extreme weather events driven by climate change. The unusual winter heat, coupled with projected high temperatures and increased UV radiation, presents a dual challenge: immediate public health risks from heat stress and elevated UV exposure, and longer-term implications for ecosystems and economic sectors like fishing, as previously noted. The interplay of oceanic warming, atmospheric patterns like the South Pacific Anticyclone, and regional wind systems demonstrates the complex feedback loops at play. Future preparedness strategies must integrate advanced climate modeling with adaptive infrastructure and public health advisories to mitigate the impacts of such persistent anomalies, moving beyond reactive measures to proactive resilience building in a warming world.
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