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Weather in São Sebastião, Brazil 🇧🇷

Current Weather in São Sebastião

Light rain shower
24°C
Feels like 27°C. Light rain shower.
🌬️ 4 km/h S
💧 79% Humidity
🧭 1016 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 5.3
🌡️ Dew Point: 20°C
🌅 Sunrise: 06:01 AM
🌇 Sunset: 05:54 PM
Map Overlays:

The current temperature in São Sebastião is 24°C, light rain shower, feeling like 27°C. Humidity is 79% with winds around 4 km/h, and the UV index is 5 (moderate). In the days ahead, expect temperatures in São Sebastião from about 18°C to 25°C.

Hourly Forecast for São Sebastião

11:00
Light rain shower
25°
44%
12:00
Light rain shower
22°
43%
13:00
Light rain shower
20°
62%
14:00
Light rain shower
20°
62%
15:00
Light rain shower
19°
66%
16:00
Light rain shower
19°
63%
17:00
Light rain shower
18°
58%
18:00
Light rain shower
18°
73%
19:00
Light rain shower
18°
62%
20:00
Light rain shower
18°
55%
21:00
Light rain shower
18°
68%
22:00
Light rain shower
18°
80%
23:00
Light rain shower
18°
64%
00:00
Light rain shower
18°
68%
01:00
Light rain shower
18°
66%
02:00
Light rain shower
18°
68%
03:00
Light rain shower
18°
74%
04:00
Light rain shower
18°
71%
05:00
Light rain shower
18°
71%
06:00
Light rain shower
18°
77%
07:00
Light rain shower
18°
79%
08:00
Light rain shower
18°
80%
09:00
Light rain shower
18°
79%
10:00
Light rain shower
18°
68%

14-Day Forecast for São Sebastião

Sat, Sep 12
Light rain shower Light rain shower
25° / 18°
Sun, Sep 13
Light rain shower Light rain shower
18° / 18°
Mon, Sep 14
Light rain shower Light rain shower
21° / 18°
Tue, Sep 15
Patchy rain nearby Patchy rain nearby
20° / 16°
Wed, Sep 16
Light rain shower Light rain shower
20° / 15°
Thu, Sep 17
Light rain shower Light rain shower
16° / 15°
Fri, Sep 18
Mist Mist
23° / 16°
Sat, Sep 19
Light rain shower Light rain shower
22° / 18°
Sun, Sep 20
Light rain shower Light rain shower
20° / 18°
Mon, Sep 21
Light rain shower Light rain shower
22° / 17°
Tue, Sep 22
Overcast Overcast
28° / 18°
Wed, Sep 23
Light rain shower Light rain shower
18° / 12°
Thu, Sep 24
Patchy rain nearby Patchy rain nearby
17° / 12°
Fri, Sep 25
Sunny Sunny
21° / 12°

Additional Forecasts for São Sebastião

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 148.0 μg/m³
O₃ (Ozone) 64.0 μg/m³
NO₂ (Nitrogen Dioxide) 4.8 μg/m³
SO₂ (Sulphur Dioxide) 1.2 μg/m³
PM2.5 (Fine particles) 7.8 μg/m³
PM10 (Coarse particles) 7.9 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 11:00 to 14:00, when it is around 23°C. The next likely rain is around 13:00.

Frequently Asked Questions about Weather in São Sebastião

What is the temperature in São Sebastião right now?

The current temperature in São Sebastião is 24°C (75°F), light rain shower (feels like 27°C).

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

Current weather in São Sebastião: Light rain shower, humidity 79%, wind 4 km/h S.

What is today's forecast for São Sebastião?

Today in São Sebastião: high 25°C, low 18°C, light rain shower. Chance of rain: 92%.

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

Daily highs and lows for São Sebastião:

  • 2026-09-12: 25°C / 18°C
  • 2026-09-13: 18°C / 18°C
  • 2026-09-14: 21°C / 18°C
  • 2026-09-15: 20°C / 16°C
  • 2026-09-16: 20°C / 15°C
  • 2026-09-17: 16°C / 15°C
  • 2026-09-18: 23°C / 16°C
Is it going to rain in São Sebastião today?

There is a 92% chance of rain in São Sebastião today. Total expected precipitation: 14.31 mm.

What is the wind speed in São Sebastião right now?

Wind in São Sebastião is currently 4 km/h (2 mph) from the S.

What is the UV index in São Sebastião right now?

The UV index in São Sebastião is currently 5.3 (moderate). Sun protection is recommended when the index is 3 or higher.

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