Current Conditions

São Sebastião, São Paulo

64°F18°C

Rain

Wind

S 13 mph20 km/h

Humidity

86%

Cloud Cover

100%

As of Wednesday, September 23, 2026 at 6:26 AM GMT-3

Today's Outlook

Day

Overcast and mild, with a high of 64°F18°C. Breezy from the SSE at 10 to 13 mph16 to 20 km/h. 100% chance of rain throughout the day.

Night

Overcast, with a low around 63°F17°C. Breezy from the SE at 10 to 13 mph16 to 21 km/h. 100% chance of rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 66°F19°C	Low 63°F17°C	Precip 0.78 in19.9 mm100%	Cloud 100%	Wind SSE 10 mph16 km/h	Wednesday: Overcast and mild, with a high of 64°F18°C. Breezy from the SSE at 10 to 13 mph16 to 20 km/h. 100% chance of rain throughout the day. Wednesday Night: Overcast, with a low around 63°F17°C. Breezy from the SE at 10 to 13 mph16 to 21 km/h. 100% chance of rain throughout the night.
Light Rain	High 68°F20°C	Low 64°F18°C	Precip 0.11 in2.8 mm80%	Cloud 94%	Wind E 11 mph17 km/h	Thursday: Overcast and mild, with a high of 68°F20°C. Breezy from the E at 11 to 12 mph18 to 19 km/h. 80% chance of light rain throughout the day. Thursday Night: Overcast, with a low around 64°F18°C. Breezy from the E at 10 to 11 mph17 to 18 km/h. 58% chance of drizzle throughout the night.
Partly Cloudy	High 72°F22°C	Low 68°F20°C	Precip 0.01 in0.2 mm2%	Cloud 49%	Wind ENE 8 mph12 km/h	Friday: Mostly cloudy and warm, with a high of 72°F22°C. Breezy from the E at 8 mph12 km/h. Humid. Friday Night: Partly cloudy, with a low around 68°F20°C. Breezy from the ENE at 8 to 11 mph12 to 17 km/h.
Clear	High 76°F25°C	Low 69°F21°C	Precip 0 in0 mm—	Cloud 22%	Wind ENE 4 mph6 km/h	Saturday: Mostly clear and warm, with a high of 76°F25°C and morning low of 69°F21°C. Light wind from the ESE around 4 mph7 km/h. Humid. Saturday Night: Partly cloudy, with a low around 69°F21°C. Light wind from the NE around 4 mph6 km/h.
Drizzle	High 74°F23°C	Low 70°F21°C	Precip 0.03 in0.8 mm22%	Cloud 63%	Wind E 5 mph9 km/h	Sunday: Mostly cloudy and warm, with a high of 74°F23°C. Breezy from the SE at 6 to 8 mph9 to 12 km/h. 14% chance of drizzle in the afternoon. Humid. Sunday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the ENE around 5 mph8 km/h. 22% chance of drizzle in the evening.
Drizzle	High 75°F24°C	Low 70°F21°C	Precip 0.04 in0.9 mm23%	Cloud 73%	Wind E 7 mph11 km/h	Monday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 70°F21°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 23% chance of drizzle in the morning. Humid. Monday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the E at 7 mph11 km/h. 21% chance of drizzle throughout the night.
Drizzle	High 77°F25°C	Low 71°F22°C	Precip 0.04 in1 mm27%	Cloud 64%	Wind E 7 mph11 km/h	Tuesday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 71°F22°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 14% chance of drizzle in the afternoon. Heavy, humid air. Tuesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the ENE at 6 to 7 mph10 to 12 km/h. 27% chance of drizzle in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	66°F19°C	63°F17°C	0.78 in19.9 mm· 100%	100%	Rain	SSE 10 mph16 km/h
DayOvercast and mild, with a high of 64°F18°C. Breezy from the SSE at 10 to 13 mph16 to 20 km/h. 100% chance of rain throughout the day. NightOvercast, with a low around 63°F17°C. Breezy from the SE at 10 to 13 mph16 to 21 km/h. 100% chance of rain throughout the night.
	ThursdaySep 24	68°F20°C	64°F18°C	0.11 in2.8 mm· 80%	94%	Light Rain	E 11 mph17 km/h
DayOvercast and mild, with a high of 68°F20°C. Breezy from the E at 11 to 12 mph18 to 19 km/h. 80% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Breezy from the E at 10 to 11 mph17 to 18 km/h. 58% chance of drizzle throughout the night.
	FridaySep 25	72°F22°C	68°F20°C	0.01 in0.2 mm· 2%	49%	Partly Cloudy	ENE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C. Breezy from the E at 8 mph12 km/h. Humid. NightPartly cloudy, with a low around 68°F20°C. Breezy from the ENE at 8 to 11 mph12 to 17 km/h.
	SaturdaySep 26	76°F25°C	69°F21°C	0 in0 mm· —	22%	Clear	ENE 4 mph6 km/h
DayMostly clear and warm, with a high of 76°F25°C and morning low of 69°F21°C. Light wind from the ESE around 4 mph7 km/h. Humid. NightPartly cloudy, with a low around 69°F21°C. Light wind from the NE around 4 mph6 km/h.
	SundaySep 27	74°F23°C	70°F21°C	0.03 in0.8 mm· 22%	63%	Drizzle	E 5 mph9 km/h
DayMostly cloudy and warm, with a high of 74°F23°C. Breezy from the SE at 6 to 8 mph9 to 12 km/h. 14% chance of drizzle in the afternoon. Humid. NightMostly cloudy, with a low around 70°F21°C. Light wind from the ENE around 5 mph8 km/h. 22% chance of drizzle in the evening.
	MondaySep 28	75°F24°C	70°F21°C	0.04 in0.9 mm· 23%	73%	Drizzle	E 7 mph11 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 70°F21°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 23% chance of drizzle in the morning. Humid. NightMostly cloudy, with a low around 70°F21°C. Breezy from the E at 7 mph11 km/h. 21% chance of drizzle throughout the night.
	TuesdaySep 29	77°F25°C	71°F22°C	0.04 in1 mm· 27%	64%	Drizzle	E 7 mph11 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 71°F22°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 14% chance of drizzle in the afternoon. Heavy, humid air. NightMostly cloudy, with a low around 71°F22°C. Breezy from the ENE at 6 to 7 mph10 to 12 km/h. 27% chance of drizzle in the evening.
	WednesdaySep 30	76°F25°C	72°F22°C	0.06 in1.6 mm· 33%	64%	Drizzle	SW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 76°F25°C. Breezy from the SSW at 8 to 9 mph12 to 14 km/h. 27% chance of drizzle around midday. Humid. NightMostly cloudy, with a low around 72°F22°C. Breezy from the N at 6 to 8 mph10 to 12 km/h. 33% chance of drizzle in the evening.
	ThursdayOct 1	72°F22°C	70°F21°C	0.42 in10.7 mm· 78%	89%	Light Rain	SE 7 mph12 km/h
DayOvercast and warm, with a high of 72°F22°C. Breezy from the SSE at 8 to 9 mph13 to 14 km/h. 74% chance of light rain throughout the day. Humid. NightOvercast, with a low around 70°F21°C. Breezy from the ESE at 7 to 8 mph11 to 13 km/h. 78% chance of light rain throughout the night.
	FridayOct 2	71°F21°C	68°F20°C	0.41 in10.5 mm· 70%	82%	Light Rain	ESE 10 mph16 km/h
DayOvercast and warm, with a high of 71°F21°C. Breezy from the ESE at 10 to 11 mph17 to 18 km/h. 70% chance of light rain throughout the day. Humid. NightOvercast, with a low around 68°F20°C. Breezy from the ESE at 10 to 11 mph16 to 18 km/h. 69% chance of light rain throughout the night.
	SaturdayOct 3	74°F23°C	69°F20°C	0.11 in2.8 mm· 39%	63%	Showers	ENE 11 mph17 km/h
DayMostly cloudy and warm, with a high of 74°F23°C. Breezy from the E at 11 to 12 mph18 to 20 km/h. 29% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Breezy from the ENE at 11 mph17 km/h. 39% chance of showers throughout the night.
	SundayOct 4	76°F25°C	71°F22°C	0.17 in4.2 mm· 43%	73%	Light Rain	ENE 8 mph13 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 71°F22°C. Breezy from the ENE at 8 to 9 mph13 to 14 km/h. 27% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Breezy from the NE at 8 to 10 mph13 to 15 km/h. 43% chance of light rain throughout the night.
	MondayOct 5	74°F23°C	70°F21°C	0.47 in12 mm· 66%	89%	Light Rain	SSW 7 mph12 km/h
DayOvercast and warm, with a high of 74°F23°C. Breezy from the SSW at 8 to 9 mph12 to 14 km/h. 57% chance of light rain throughout the day. Humid. NightOvercast, with a low around 70°F21°C. Breezy from the SSW at 7 mph11 km/h. 66% chance of light rain throughout the night.
	TuesdayOct 6	70°F21°C	68°F20°C	0.54 in13.8 mm· 71%	92%	Light Rain	SE 8 mph14 km/h
DayOvercast and warm, with a high of 70°F21°C. Breezy from the SE at 9 to 10 mph14 to 16 km/h. 69% chance of light rain throughout the day. Humid. NightOvercast, with a low around 68°F20°C. Breezy from the SE at 8 to 9 mph13 to 15 km/h. 71% chance of light rain throughout the night.
	WednesdayOct 7	70°F21°C	68°F20°C	0.43 in11 mm· 65%	87%	Light Rain	ESE 9 mph15 km/h
DayOvercast and warm, with a high of 70°F21°C. Breezy from the ESE at 9 to 10 mph15 to 16 km/h. 65% chance of light rain throughout the day. Humid. NightOvercast, with a low around 68°F20°C. Breezy from the ESE at 9 mph15 km/h. 63% chance of light rain throughout the night.

Nearby Cities

Ilhabela3 mi6 km Caraguatatuba10 mi16 km Paraibuna30 mi49 km Ubatuba31 mi50 km Salesópolis32 mi52 km Biritiba Mirim42 mi67 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 23.7600°S, 45.4097°W·Elevation: 6m·Timezone: America/Sao_Paulo·Population: 81,595