Weather guides

How to Read a Weather Radar

Learn what radar colors mean, how radar differs from satellite, what it cannot show, and how to combine radar with the forecast to plan the next few hours.

Frontal systems and rain in Chile

What the frontal systems that bring rain and snow to central and southern Chile in winter are, and how to anticipate them with the forecast.

Heavy swells (marejadas) on the Chilean coast

What marejadas are, why they affect the whole coast of Chile with strong swell, and how to stay safe when there is a swell warning.

Heat waves and wildfires in Chile

Why Chilean summers bring heat waves and wildfires, where they hit hardest, and how to protect yourself from the heat and smoke.

The camanchaca and the climate of northern Chile

What the camanchaca is, why the Atacama Desert is so dry, and what northern Chile's climate is like — sun, dryness and coastal fog.

Snow in the Andes and frost in Chile

When it snows in the Chilean Andes, how it affects mountain passes and ski resorts, and when frost hits the central valley and the countryside.

How a Weather Forecast Is Made

Find out how a weather forecast is built: the observations, numerical models such as ECMWF, GFS and ICON, why forecasts carry uncertainty, and how often the data is updated.

Feels-like temperature: why it differs from the thermometer

What feels-like temperature is, how it differs from air temperature, how wind and humidity change what you sense, and why it matters for your health and clothing.

Humidity and Comfort: How It Affects Your Body

The difference between relative and absolute humidity, what dew point is, why high humidity feels hotter and low humidity dries you out, and the comfortable ranges.

El Nino and La Nina: the pulse of Latin America's climate

What El Nino and La Nina (the ENSO phenomenon) are, how they shift rainfall and temperatures across Latin America, how long their cycles last, and why they matter so much for the region.

What is the UV Index and how to protect yourself

Learn what the UV index is, how the 1 to 11+ scale works, what risk each level means and how to protect your skin and eyes from the sun.