About San Justo, Buenos Aires's Climate & Weather History

San Justo is a city of approximately 105,000 people in Buenos Aires, Argentina. Located in the America/Argentina/Buenos Aires time zone at 34.7°S latitude.

In 2025, San Justo recorded an average annual temperature of 65°F. The hottest temperatures reached 101°F in December; the coolest were 29°F in July. Total precipitation for the year was 46 inches, with the wettest month being March.