Weather in San Luis in September
San Luis, Argentina averages a high of 21.5°C (70.7°F) and low of 9.6°C (49.3°F) in September, with 4 rain days and 10.3 hours of daily sunshine. Travel score: 86.3/100 (Excellent). The best time to visit San Luis is March.
High
22°C71°F
Low
10°C49°F
🌧️
4
rain days
☀️
10.3
hrs/day sunshine
💧
46%
humidity
86— Excellent
September in San Luis is mild and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Luis?
How much does it rain in San Luis in September?
San Luis receives an average of 26.2mm of rainfall across 4 rainy days in September. The annual total is 612mm.
What should I pack for San Luis in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 22°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Argentina in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31