Bonao's weather is characterized by a relatively constant temperature throughout the year, with average temperatures ranging from 24°C in January and December to a high of 27°C in August and September. Spring-like conditions prevail during the months of March to May, with temperatures gradually increasing into summer. Summer itself brings warm days with highs often reaching 35-36°C, but with relatively mild nights. Autumn sees a slight decrease in temperature, returning to more moderate levels by November. Winter is marked by slightly cooler temperatures, but still pleasant overall, with January and December being the coolest months.