Nuevo San Carlos is a city of approximately 39,600 people in Retalhuleu, Guatemala. Located in the America/Guatemala time zone at 14.6°N latitude.
In 2025, Nuevo San Carlos recorded an average annual temperature of 77°F. The hottest temperatures reached 95°F in April; the coolest were 62°F in April. Total precipitation for the year was 73 inches, with the wettest month being October.
View current conditions and forecast for Nuevo San Carlos · More cities in Retalhuleu