Maria Antonia is a city of approximately 1,500 people in Guanica, Puerto Rico. Located in the America/Puerto Rico time zone at 18°N latitude.
In 2025, Maria Antonia recorded an average annual temperature of 80°F. The hottest temperatures reached 92°F in October; the coolest were 63°F in December. Total precipitation for the year was 26 inches, with the wettest month being August.
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