Weather in São Sebastião in September
São Sebastião, Brazil averages a high of 30.1°C (86.2°F) and low of 18.1°C (64.6°F) in September, with 4 rain days and 11.4 hours of daily sunshine. Travel score: 95.3/100 (Excellent). The best time to visit São Sebastião is July.
High
30°C86°F
Low
18°C65°F
🌧️
4
rain days
☀️
11.4
hrs/day sunshine
💧
48%
humidity
95— Excellent
September in São Sebastião is hot and mostly dry — excellent conditions for exploring.
What are the average temperatures in São Sebastião?
How much does it rain in São Sebastião in September?
São Sebastião receives an average of 21mm of rainfall across 4 rainy days in September. The annual total is 1157.1mm.
What should I pack for São Sebastião in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light, breathable clothing
Hot weather with highs around 30°C
🧢
Sun hat or cap
Protection from intense sun
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Brazil 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