This region belongs to the Premontane Rain Forest life zone, with average annual temperatures from 18°C to 24°C, so the predominant climate in Zaruma is moist and subtropical. Average annual precipitation in some areas is from 2000 to 4000 mm and there are two clearly defined seasons: winter from January to April, and summer, April to December, with the driest months between July and November. Because Ecuador straddles the equator, parallel 0º, the seasons are caused by ocean currents: winter is the rainy period, under the influence of the warm El Niño current, whereas summer is influenced more by the cold Humboldt current and is generally the dry season.