Colombia's proximity to the equator means its temperature varies little throughout the year. However, the temperature does change with altitude, which creates various climatic zones ranging from hot lowlands to freezing Andean peaks - you can experience completely different climates within just a couple of hours of travel. As a general rule, the temperature falls about 6ºC (43ºF) with every 1000m (3281ft) increase in altitude.
Colombia has two seasons: verano or la sequia (summer, or dry), and invierno or temproada de lluvia (winter, or wet). The pattern of seasons varies in different parts of the country, and has been greatly affected over recent years by El Niño and La Niña. For example, in the Andean region there are two dry and two rainy seasons per year. The main dry season falls between December and March, with a shorter and less dry period between July and August. This general pattern varies throughout the Andean zone.
The weather in Los Llanos has a more definite pattern: there is one dry season, between December and March, while the rest of the year it's wet. The Amazon doesn't have a uniform climate but is generally quite wet year-round.