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Weather in São Sebastião, Brazil 🇧🇷

Weather Forecast in São Sebastião

Current Weather in São Sebastião

Sunny
27°C
Feels like 26°C. Sunny.
🌬️ 5 km/h NNE
💧 42% Humidity
🧭 1013 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 6.1
🌡️ Dew Point: 13°C
🌅 Sunrise: 06:41 AM
🌇 Sunset: 05:34 PM
Map Overlays:

São Sebastião currently sits at 27°C, sunny, feeling like 26°C. Humidity is 42% with winds around 5 km/h, and the UV index is 6 (high). The next few days in São Sebastião look set for about 18°C up to 28°C.

Hourly Forecast for São Sebastião

14:00
Sunny
27°
1%
15:00
Sunny
26°
1%
16:00
Sunny
25°
2%
17:00
Sunny
22°
3%
18:00
Clear
20°
3%
19:00
Clear
20°
3%
20:00
Clear
20°
2%
21:00
Clear
20°
2%
22:00
Clear
20°
3%
23:00
Clear
20°
3%
00:00
Clear
20°
3%
01:00
Clear
20°
3%
02:00
Clear
19°
3%
03:00
Clear
19°
3%
04:00
Clear
19°
3%
05:00
Clear
19°
3%
06:00
Clear
19°
3%
07:00
Sunny
18°
3%
08:00
Sunny
20°
3%
09:00
Sunny
23°
2%
10:00
Sunny
26°
1%
11:00
Sunny
27°
1%
12:00
Sunny
28°
1%
13:00
Sunny
28°
1%

14-Day Forecast for São Sebastião

Tue, Jul 21
Sunny Sunny
27° / 18°
Wed, Jul 22
Sunny Sunny
28° / 18°
Thu, Jul 23
Sunny Sunny
25° / 18°
Fri, Jul 24
Light rain Light rain
19° / 19°
Sat, Jul 25
Patchy rain nearby Patchy rain nearby
24° / 18°
Sun, Jul 26
Sunny Sunny
21° / 15°
Mon, Jul 27
Sunny Sunny
21° / 14°
Tue, Jul 28
Sunny Sunny
24° / 16°
Wed, Jul 29
Sunny Sunny
26° / 16°
Thu, Jul 30
Sunny Sunny
28° / 18°
Fri, Jul 31
Sunny Sunny
29° / 19°
Sat, Aug 01
Mist Mist
21° / 19°
Sun, Aug 02
Sunny Sunny
24° / 18°
Mon, Aug 03
Sunny Sunny
27° / 18°

Additional Forecasts for São Sebastião

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 108.0 μg/m³
O₃ (Ozone) 103.0 μg/m³
NO₂ (Nitrogen Dioxide) 1.0 μg/m³
SO₂ (Sulphur Dioxide) 1.0 μg/m³
PM2.5 (Fine particles) 9.7 μg/m³
PM10 (Coarse particles) 10.9 μg/m³

Historical Weather

Weather Forecasts for Other Cities in Brazil

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Best Time to Be Outside in São Sebastião Today

The most comfortable window in São Sebastião today looks like 17:00 to 07:00, when it is around 20°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in São Sebastião

What is the temperature in São Sebastião right now?

The current temperature in São Sebastião is 27°C (80°F), sunny (feels like 26°C).

What's the weather like in São Sebastião right now?

Current weather in São Sebastião: Sunny, humidity 42%, wind 5 km/h NNE.

What is today's forecast for São Sebastião?

Today in São Sebastião: high 27°C, low 18°C, sunny. Chance of rain: 2%.

What is the 7-day weather forecast for São Sebastião?

Daily highs and lows for São Sebastião:

  • 2026-07-21: 27°C / 18°C
  • 2026-07-22: 28°C / 18°C
  • 2026-07-23: 25°C / 18°C
  • 2026-07-24: 19°C / 19°C
  • 2026-07-25: 24°C / 18°C
  • 2026-07-26: 21°C / 15°C
  • 2026-07-27: 21°C / 14°C
Is it going to rain in São Sebastião today?

There is a 2% chance of rain in São Sebastião today.

What is the wind speed in São Sebastião right now?

Wind in São Sebastião is currently 5 km/h (3 mph) from the NNE.

What is the UV index in São Sebastião right now?

The UV index in São Sebastião is currently 6.1 (high). Sun protection is recommended when the index is 3 or higher.

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