Wanderlust World Wanderlust World The Peru (Humboldt) Current is a cold ocean current flowing northward along the western coast of South America. It shapes the climate of coastal Peru and Chile in several key ways:
Cold Antarctic waters moderate coastal temperatures, creating a cooler, more humid climate than inland areas at similar latitudes.
When the current's chilled air meets warmer land air, dense fog forms, often persisting for days. This fog reduces visibility, disrupts transport, and can cause respiratory issues.
Driven by the Coriolis effect, cold, nutrient-rich water rises to the surface near the coast. This upwelling fuels a prolific marine ecosystem of plankton, fish, and other sea life.
The current's cold, dry air inhibits cloud formation over the Atacama Desert, resulting in extreme aridity. The lack of precipitation prevents plant growth, driving desertification.
Beyond climate, the current sustains fisheries vital to the regional economy and culture, while fog harvesting provides precious water in desert communities.