Weather in San Martín in September
San Martín, Argentina averages a high of 21.3°C (70.3°F) and low of 8.7°C (47.7°F) in September, with 2 rain days and 10.5 hours of daily sunshine. Travel score: 88.9/100 (Excellent). The best time to visit San Martín is November.
High
21°C70°F
Low
9°C48°F
🌧️
2
rain days
☀️
10.5
hrs/day sunshine
💧
44%
humidity
89— Excellent
September in San Martín is mild and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Martín?
How much does it rain in San Martín in September?
San Martín receives an average of 10.3mm of rainfall across 2 rainy days in September. The annual total is 255.1mm.
What should I pack for San Martín in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 21°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 13°C from day to night
🎉Visiting Argentina in September?
Don't miss any public holidays — check before you book!
Compare San Martín
Popular comparisons:
How can I plan my trip to San Martín?
What other cities are near San Martín?
What are other popular cities in Argentina?
What is the weather like in other months in San Martín?
Data based on 1994–2024 averages · Last updated: 2024-12-31