Current Conditions

São Sebastião do Caí, Rio Grande do Sul

56°F13°C

Clear

Wind

NNW 2 mph4 km/h

Humidity

88%

Cloud Cover

57%

As of Wednesday, September 2, 2026 at 9:19 AM GMT-3

Today's Outlook

Day

Partly cloudy and warm, with a high of 70°F21°C and morning low of 51°F10°C. Light wind from the NNW around 2 mph3 km/h.

Night

Mostly clear, with a low around 52°F11°C. Light wind from the ENE around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 70°F21°C	Low 51°F10°C	Precip 0 in0 mm—	Cloud 31%	Wind NE 2 mph4 km/h	Wednesday: Partly cloudy and warm, with a high of 70°F21°C and morning low of 51°F10°C. Light wind from the NNW around 2 mph3 km/h. Wednesday Night: Mostly clear, with a low around 52°F11°C. Light wind from the ENE around 3 mph5 km/h.
Showers	High 78°F26°C	Low 53°F12°C	Precip 0.02 in0.6 mm49%	Cloud 26%	Wind NW 7 mph12 km/h	Thursday: Partly cloudy and warm, with a high of 78°F26°C and morning low of 54°F12°C. Breezy from the NW at 9 to 10 mph14 to 17 km/h. Thursday Night: Partly cloudy, with a low around 53°F12°C. Breezy from the NNW at 6 to 8 mph10 to 13 km/h. 49% chance of showers in the evening.
Showers	High 65°F18°C	Low 54°F12°C	Precip 0.14 in3.6 mm82%	Cloud 51%	Wind S 3 mph6 km/h	Friday: Mostly cloudy and mild, with a high of 65°F18°C and morning low of 55°F13°C. Light wind from the SW around 3 mph5 km/h. 33% chance of drizzle in the morning. Friday Night: Mostly cloudy, with a low around 54°F12°C. Light wind from the SSE around 4 mph6 km/h. 82% chance of showers overnight.
Partly Cloudy	High 63°F17°C	Low 47°F8°C	Precip 0 in0 mm—	Cloud 55%	Wind WSW 4 mph7 km/h	Saturday: Overcast and mild, with a high of 63°F17°C and morning low of 47°F8°C. Breezy from the WSW at 5 to 8 mph8 to 12 km/h. Dry air. Saturday Night: Partly cloudy, with a low around 47°F8°C. Light wind from the SW around 4 mph6 km/h.
Partly Cloudy	High 54°F12°C	Low 42°F6°CFeels 38°F3°C	Precip 0 in0.1 mm5%	Cloud 42%	Wind SW 6 mph10 km/h	Sunday: Partly cloudy and mild, with a high of 54°F12°C and morning low of 42°F6°C. Breezy from the SW at 7 to 8 mph12 to 12 km/h. Dry air. Sunday Night: Partly cloudy, with a low around 44°F7°C. Light wind from the SSW around 5 mph8 km/h.
Partly Cloudy	High 60°F15°C	Low 39°F4°C	Precip 0 in0.1 mm2%	Cloud 44%	Wind ESE 5 mph7 km/h	Monday: Mostly cloudy and mild, with a high of 60°F15°C and morning low of 39°F4°C. Breezy from the ESE at 5 to 7 mph7 to 11 km/h. Dry air. Monday Night: Partly cloudy, with a low around 40°F4°C. Breezy from the ESE at 4 to 7 mph7 to 12 km/h.
Clear	High 70°F21°C	Low 46°F8°C	Precip 0 in0.1 mm3%	Cloud 22%	Wind NNE 4 mph7 km/h	Tuesday: Mostly clear and warm, with a high of 70°F21°C and morning low of 46°F8°C. Light wind from the NW around 4 mph7 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 46°F8°C. Light wind from the E around 4 mph7 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	70°F21°C	51°F10°C	0 in0 mm· —	31%	Clear	NE 2 mph4 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 51°F10°C. Light wind from the NNW around 2 mph3 km/h. NightMostly clear, with a low around 52°F11°C. Light wind from the ENE around 3 mph5 km/h.
	ThursdaySep 3	78°F26°C	53°F12°C	0.02 in0.6 mm· 49%	26%	Showers	NW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 54°F12°C. Breezy from the NW at 9 to 10 mph14 to 17 km/h. NightPartly cloudy, with a low around 53°F12°C. Breezy from the NNW at 6 to 8 mph10 to 13 km/h. 49% chance of showers in the evening.
	FridaySep 4	65°F18°C	54°F12°C	0.14 in3.6 mm· 82%	51%	Showers	S 3 mph6 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 55°F13°C. Light wind from the SW around 3 mph5 km/h. 33% chance of drizzle in the morning. NightMostly cloudy, with a low around 54°F12°C. Light wind from the SSE around 4 mph6 km/h. 82% chance of showers overnight.
	SaturdaySep 5	63°F17°C	47°F8°C	0 in0 mm· —	55%	Partly Cloudy	WSW 4 mph7 km/h
DayOvercast and mild, with a high of 63°F17°C and morning low of 47°F8°C. Breezy from the WSW at 5 to 8 mph8 to 12 km/h. Dry air. NightPartly cloudy, with a low around 47°F8°C. Light wind from the SW around 4 mph6 km/h.
	SundaySep 6	54°F12°C	42°F6°C Feels 38°F3°C	0 in0.1 mm· 5%	42%	Partly Cloudy	SW 6 mph10 km/h
DayPartly cloudy and mild, with a high of 54°F12°C and morning low of 42°F6°C. Breezy from the SW at 7 to 8 mph12 to 12 km/h. Dry air. NightPartly cloudy, with a low around 44°F7°C. Light wind from the SSW around 5 mph8 km/h.
	MondaySep 7	60°F15°C	39°F4°C	0 in0.1 mm· 2%	44%	Partly Cloudy	ESE 5 mph7 km/h
DayMostly cloudy and mild, with a high of 60°F15°C and morning low of 39°F4°C. Breezy from the ESE at 5 to 7 mph7 to 11 km/h. Dry air. NightPartly cloudy, with a low around 40°F4°C. Breezy from the ESE at 4 to 7 mph7 to 12 km/h.
	TuesdaySep 8	70°F21°C	46°F8°C	0 in0.1 mm· 3%	22%	Clear	NNE 4 mph7 km/h
DayMostly clear and warm, with a high of 70°F21°C and morning low of 46°F8°C. Light wind from the NW around 4 mph7 km/h. Dry air. NightMostly clear, with a low around 46°F8°C. Light wind from the E around 4 mph7 km/h.
	WednesdaySep 9	70°F21°C	50°F10°C	0.05 in1.3 mm· 32%	54%	Showers	ESE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 50°F10°C. Breezy from the ESE at 5 to 7 mph7 to 12 km/h. NightPartly cloudy, with a low around 50°F10°C. Breezy from the ESE at 5 to 8 mph8 to 12 km/h. 32% chance of showers in the evening.
	ThursdaySep 10	65°F19°C	57°F14°C	0.69 in17.4 mm· 71%	84%	Rain	ESE 6 mph9 km/h
DayOvercast and mild, with a high of 65°F19°C and morning low of 57°F14°C. Breezy from the E at 6 to 7 mph9 to 11 km/h. 71% chance of rain throughout the day. NightMostly cloudy, with a low around 57°F14°C. Light wind from the SE around 5 mph9 km/h. 66% chance of light rain throughout the night.
	FridaySep 11	68°F20°C	55°F13°C	0.27 in6.9 mm· 41%	65%	Showers	WSW 6 mph10 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 55°F13°C. Breezy from the W at 6 to 7 mph10 to 11 km/h. 31% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Light wind from the SSW around 6 mph9 km/h. 41% chance of showers throughout the night.
	SaturdaySep 12	64°F18°C	52°F11°C	0.28 in7 mm· 31%	61%	Showers	SSE 6 mph10 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 52°F11°C. Breezy from the S at 7 to 8 mph11 to 13 km/h. 31% chance of showers throughout the day. NightMostly cloudy, with a low around 53°F12°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h. 29% chance of showers throughout the night.
	SundaySep 13	65°F18°C	50°F10°C Feels 47°F9°C	0.1 in2.6 mm· 23%	56%	Drizzle	SSE 6 mph10 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 50°F10°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 19% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 51°F10°C. Light wind from the SE around 6 mph9 km/h. 23% chance of drizzle throughout the night.
	MondaySep 14	69°F20°C	50°F10°C	0.11 in2.8 mm· 20%	55%	Drizzle	ENE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 50°F10°C. Light wind from the NW around 5 mph9 km/h. 20% chance of drizzle throughout the day. NightMostly cloudy, with a low around 51°F11°C. Light wind from the E around 5 mph8 km/h. 18% chance of drizzle throughout the night.
	TuesdaySep 15	71°F22°C	52°F11°C	0.17 in4.4 mm· 20%	46%	Showers	NE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 52°F11°C. Light wind from the N around 5 mph9 km/h. 20% chance of showers throughout the day. NightPartly cloudy, with a low around 52°F11°C. Light wind from the ENE around 5 mph8 km/h. 18% chance of showers throughout the night.
	WednesdaySep 16	70°F21°C	53°F12°C	0.19 in4.8 mm· 27%	51%	Showers	ESE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 53°F12°C. Light wind from the S around 6 mph9 km/h. 27% chance of showers throughout the day. NightMostly cloudy, with a low around 54°F12°C. Light wind from the E around 5 mph9 km/h. 23% chance of showers throughout the night.

Nearby Cities

Montenegro9 mi14 km Portão11 mi18 km Estância Velha13 mi21 km Ivoti13 mi21 km Novo Hamburgo16 mi26 km Dois Irmãos17 mi28 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.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 29.5867°S, 51.3756°W·Elevation: 16m·Timezone: America/Sao_Paulo·Population: 24,428