Current Conditions

Guaianases, São Paulo

63°F17°C
Rain

Wind

ESE 3 mph5 km/h

Humidity

88%

Cloud Cover

72%

As of Tuesday, September 8, 2026 at 5:37 PM GMT-3

Today's Outlook

Day

Overcast and warm, with a high of 69°F21°C and morning low of 60°F15°C. Light wind from the NNW around 3 mph5 km/h. 95% chance of rain throughout the day.

Night

Overcast, with a low around 60°F15°C. Light wind from the NE around 3 mph5 km/h. 95% chance of rain throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
RainHigh 69°F21°CLow 60°F15°CPrecip 0.41 in10.4 mm95%Cloud 91%Wind NNE 3 mph5 km/hWednesday: Overcast and warm, with a high of 69°F21°C and morning low of 60°F15°C. Light wind from the NNW around 3 mph5 km/h. 95% chance of rain throughout the day. Wednesday Night: Overcast, with a low around 60°F15°C. Light wind from the NE around 3 mph5 km/h. 95% chance of rain throughout the night.
RainHigh 68°F20°CLow 63°F17°CPrecip 0.85 in21.7 mm98%Cloud 96%Wind N 5 mph7 km/hThursday: Overcast and mild, with a high of 68°F20°C. Light wind from the NNW around 5 mph7 km/h. 96% chance of rain throughout the day. Thursday Night: Overcast, with a low around 63°F17°C. Light wind from the NNE around 4 mph7 km/h. 98% chance of rain throughout the night.
Light RainHigh 80°F27°CLow 63°F17°CPrecip 0.32 in8.2 mm62%Cloud 71%Wind NNW 8 mph13 km/hFriday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 64°F18°C. Breezy from the NNW at 10 to 13 mph16 to 20 km/h. 46% chance of showers throughout the day. Humid. Friday Night: Overcast, with a low around 63°F17°C. Light wind from the N around 6 mph9 km/h. 62% chance of light rain throughout the night.
RainHigh 69°F20°CLow 60°F16°CPrecip 0.87 in22 mm90%Cloud 95%Wind W 6 mph10 km/hSaturday: Overcast and warm, with a high of 69°F20°C. Breezy from the NW at 7 to 8 mph11 to 12 km/h. 88% chance of rain throughout the day. Saturday Night: Overcast, with a low around 60°F16°C. Breezy from the SSE at 6 to 7 mph10 to 12 km/h. 90% chance of rain throughout the night.
RainHigh 60°F16°CLow 57°F14°CPrecip 0.67 in17 mm94%Cloud 100%Wind SE 8 mph13 km/hSunday: Overcast and mild, with a high of 60°F16°C. Breezy from the SE at 8 to 9 mph13 to 15 km/h. 94% chance of light rain throughout the day. Sunday Night: Overcast, with a low around 57°F14°C. Breezy from the SSE at 8 to 9 mph12 to 14 km/h. 91% chance of rain throughout the night.
RainHigh 60°F16°CLow 56°F13°CPrecip 0.82 in20.8 mm97%Cloud 100%Wind SE 6 mph10 km/hMonday: Overcast and mild, with a high of 60°F16°C and morning low of 56°F13°C. Light wind from the SE around 6 mph10 km/h. 97% chance of rain throughout the day. Monday Night: Overcast, with a low around 56°F13°C. Breezy from the SSE at 6 to 7 mph9 to 11 km/h. 94% chance of rain throughout the night.
RainHigh 65°F18°CLow 57°F14°CPrecip 0.35 in8.9 mm82%Cloud 91%Wind S 5 mph9 km/hTuesday: Overcast and mild, with a high of 65°F18°C and morning low of 57°F14°C. Breezy from the S at 6 to 7 mph9 to 12 km/h. 64% chance of light rain throughout the day. Tuesday Night: Overcast, with a low around 57°F14°C. Light wind from the SSE around 5 mph8 km/h. 82% chance of rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 969°F21°C60°F15°C0.41 in10.4 mm· 95%91%RainNNE 3 mph5 km/h
ThursdaySep 1068°F20°C63°F17°C0.85 in21.7 mm· 98%96%RainN 5 mph7 km/h
FridaySep 1180°F27°C63°F17°C0.32 in8.2 mm· 62%71%Light RainNNW 8 mph13 km/h
SaturdaySep 1269°F20°C60°F16°C0.87 in22 mm· 90%95%RainW 6 mph10 km/h
SundaySep 1360°F16°C57°F14°C0.67 in17 mm· 94%100%RainSE 8 mph13 km/h
MondaySep 1460°F16°C56°F13°C0.82 in20.8 mm· 97%100%RainSE 6 mph10 km/h
TuesdaySep 1565°F18°C57°F14°C0.35 in8.9 mm· 82%91%RainS 5 mph9 km/h
WednesdaySep 1663°F17°C56°F13°C0.16 in4.1 mm· 57%89%Light RainSE 7 mph11 km/h
ThursdaySep 1768°F20°C55°F13°C0.07 in1.8 mm· 23%82%DrizzleESE 7 mph11 km/h
FridaySep 1873°F23°C58°F14°C0.07 in1.8 mm· 26%76%Light RainESE 5 mph9 km/h
SaturdaySep 1974°F23°C60°F15°C0.16 in4 mm· 39%82%Light RainE 5 mph8 km/h
SundaySep 2074°F23°C62°F17°C0.26 in6.5 mm· 47%91%Light RainNNW 6 mph9 km/h
MondaySep 2174°F24°C63°F17°C0.2 in5.1 mm· 46%88%Light RainNW 6 mph10 km/h
TuesdaySep 2275°F24°C62°F17°C0.16 in4 mm· 42%85%Light RainNNW 6 mph10 km/h
WednesdaySep 2375°F24°C61°F16°C0.07 in1.8 mm· 35%79%Light RainENE 6 mph10 km/h

Nearby Cities

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

PatternExampleDescription
/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=11.5Find 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: 23.5433°S, 46.4108°W·Elevation: 759m·Timezone: America/Sao_Paulo·Population: 109,316