Weather in São Sebastião in September
São Sebastião, Brazil averages a high of 24°C (75.2°F) and low of 19°C (66.2°F) in September, with 13 rain days and 8.7 hours of daily sunshine. Travel score: 72.9/100 (Good). The best time to visit São Sebastião is July.
High
24°C75°F
Low
19°C66°F
🌧️
13
rain days
☀️
8.7
hrs/day sunshine
💧
85%
humidity
73— Good
September in São Sebastião is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in São Sebastião?
How much does it rain in São Sebastião in September?
São Sebastião receives an average of 113.7mm of rainfall across 13 rainy days in September. The annual total is 1774mm.
What should I pack for São Sebastião in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 24°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (13 days)
☔
Umbrella
Be prepared for occasional showers
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