Cai Lay experiences a tropical climate with high temperatures throughout the year. During the dry season, which spans from January to April and October to November, temperatures range from 22-36°C, with an average of around 28°C. In these periods, days are hot and sunny, while nights can be mild. The wet season, from May to September, brings slightly cooler temperatures, averaging around 27-28°C, but still warm overall. During the winter months of December and January, temperatures dip slightly, ranging from 20-33°C, but remain relatively consistent throughout the year.