Bartolo, in Rio Grande, Puerto Rico, is home to roughly 1,300 people in the America/Puerto Rico time zone at 18.4°N latitude.
In 2025, Bartolo averaged an annual temperature of 78°F, with hottest temperatures reaching 90°F in September and lowest around 67°F in December. The city received approximately 50 inches of precipitation during the year.
View historical weather for Bartolo · More cities in Rio Grande