September in Santiago de los Caballeros averages a daily high of 33.6°C with nights around 22.7°C. Expect roughly 11.5 wet days totalling 124.8mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Santiago de los Caballeros is March–April.
Based on PUERTO PLATA, DR (36.4km), 1995–2024. 23 years of September data.