Chimaltenango has three different climates and is dominated by Csb.
|Warm-summer Mediterranean climate||17||Csb||El Tejar, Chirijuyu, Tecpan, Santa Apolonia, San Juan Comalapa|
|Tropical monsoon climate||5||Am||San Rafael Sumatán, Los Yucales, Morelia, Homogenes Montellano, Yepocapa|
|Subtropical highland oceanic climate||2||Cwb||Quisaché, Acatenango|
The climate in El Tejar is warm and temperate. The summers are much rainier than the winters in El Tejar. The Köppen-Geiger climate classification is Cwb. The average annual temperature is 16.9 °C | 62.4 °F in El Tejar. In a year, the rainfall is 1149 mm | 45.2 inch.