Lima Swelters: Intense Heat and Humidity Grip the Capital
Residents of Lima, Peru are experiencing a stifling combination of heat and humidity, with the “bochorno” – a sensation of oppressive heat – expected to peak this weekend. According to the National Meteorological and Hydrological Service of Peru (Senamhi), the perceived temperature could reach 32.5°C (90.5°F) in some districts.
The Science Behind the Swelter
The unusual weather pattern is a result of converging humidity sources. Raquel Loayza, a meteorologist at Senamhi, explains that a cool sea and moisture-laden air from the Andes mountains are creating a “confinement” of humidity. This means the moisture clings to the skin, hindering normal perspiration and intensifying the feeling of heat.
Microclimates and Regional Variations
Lima’s unique microclimates signify the intensity of the heat varies across the city. Eastern districts like La Molina, Ate, and Chosica are forecast to experience maximum temperatures of 30-31°C (86-88°F), with the humidity pushing the perceived temperature higher. Northern areas, including Comas and Carabayllo, may reach 31°C (88°F) with a 95% humidity level, also contributing to the uncomfortable sensation.
Temporary Relief from Showers
While light showers have been recorded in some areas, such as La Molina and Villa María del Triunfo, the relief is fleeting. The asphalt dries quickly under the sun, and the oppressive humidity returns shortly after.
When Will the Heat Break?
Senamhi forecasts that the intense heat and humidity will persist through Saturday, February 21st. However, Loayza suggests that conditions may improve starting Tuesday, February 24th or Wednesday, February 25th, with a potential increase in wind.
Understanding the “Bochorno”
The “bochorno” isn’t simply about high temperatures. it’s about how the body perceives heat in high humidity. When the air is saturated with moisture, sweat doesn’t evaporate efficiently, which is the body’s primary cooling mechanism. This leads to a feeling of stickiness and discomfort, even at relatively moderate temperatures.
Pro Tip:
Stay hydrated by drinking plenty of water throughout the day. Wear light-colored, loose-fitting clothing to help your body regulate its temperature. Seek shade during the hottest hours.
FAQ: Lima’s Heatwave
Q: What is causing the high humidity in Lima?
A: The combination of a cool sea and moisture from the Andes mountains is creating a confinement of humidity.
Q: Which districts are expected to be the hottest?
A: Eastern districts like La Molina, Ate, and Chosica are expected to experience the highest perceived temperatures.
Q: Will the showers provide lasting relief?
A: No, the relief from showers is temporary as the asphalt dries quickly and humidity returns.
Q: When is the heat expected to subside?
A: Conditions may improve starting Tuesday, February 24th or Wednesday, February 25th.
Did you know? The Senamhi recorded a rainfall accumulation of 1.4 mm in Jesús María, a record not seen since 1965.
Stay informed about the latest weather updates from Senamhi: https://www.senamhi.gob.pe/?p=prensa&n=969
Share this article with friends and family in Lima to help them stay safe and prepared for the heat!
