About Santa Lucia, San Juan's Climate & Weather History

Santa Lucia is a city of approximately 43,600 people in San Juan, Argentina. Located in the America/Argentina/San Juan time zone at 31.5°S latitude.

In 2025, Santa Lucia recorded an average annual temperature of 67°F. The hottest temperatures reached 112°F in February; the coolest were 26°F in June. Total precipitation for the year was 6 inches, with the wettest month being August.