Weather in Santiago in September
Santiago, Chile averages a high of 17.7°C (63.9°F) and low of 6°C (42.8°F) in September, with 7 rain days and 9.7 hours of daily sunshine. Travel score: 76.7/100 (Good). The best time to visit Santiago is January.
High
18°C64°F
Low
6°C43°F
🌧️
7
rain days
☀️
9.7
hrs/day sunshine
💧
68%
humidity
77— Good
September in Santiago is mild and mostly dry — good for most activities.
What are the average temperatures in Santiago?
How much does it rain in Santiago in September?
Santiago receives an average of 50.2mm of rainfall across 7 rainy days in September. The annual total is 448.8mm.
What should I pack for Santiago in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to Chile 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