About Santa Maria, Rio Grande do Sul's Climate & Weather History

Santa Maria, in Rio Grande do Sul, Brazil, is home to roughly 284,000 people in the America/Sao Paulo time zone at 29.7°S latitude.

In 2025, Santa Maria recorded an average annual temperature of 67°F. The hottest temperatures reached 100°F in February; the coolest were 31°F in July. Total precipitation for the year was 81 inches, with the wettest month being September.