Current Conditions

Sintra, Lisbon

70°F21°C
Clear

Wind

N 10 mph17 km/h

Humidity

79%

Cloud Cover

1%

As of Wednesday, September 2, 2026 at 9:18 PM GMT+1

Today's Outlook

Night

Mostly clear, with a low around 66°F19°C. Breezy from the N at 8 to 9 mph13 to 14 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 91°F33°CLow 65°F18°CPrecip 0 in0 mmCloud 11%Wind N 7 mph11 km/hThursday: Mostly clear and hot, with a high of 91°F33°C and morning low of 65°F18°C. Breezy from the NNE at 6 to 7 mph9 to 12 km/h. Thursday Night: Mostly clear, with a low around 66°F19°C. Breezy from the N at 8 to 9 mph13 to 14 km/h.
Partly CloudyHigh 81°F27°CLow 71°F22°CPrecip 0.01 in0.2 mm6%Cloud 78%Wind N 5 mph9 km/hFriday: Overcast and warm, with a high of 81°F27°C and morning low of 71°F22°C. Light wind from the NE around 5 mph9 km/h. Humid. Friday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the N at 5 to 7 mph9 to 11 km/h.
ClearHigh 83°F28°CLow 71°F21°CPrecip 0.01 in0.2 mm9%Cloud 16%Wind NNW 7 mph12 km/hSaturday: Mostly clear and warm, with a high of 83°F28°C and morning low of 71°F21°C. Breezy from the NNW at 7 to 9 mph11 to 14 km/h. Humid. Saturday Night: Mostly clear, with a low around 71°F22°C. Breezy from the NNW at 8 to 10 mph12 to 16 km/h.
ClearHigh 79°F26°CLow 68°F20°CPrecip 0 in0 mmCloud 14%Wind N 11 mph18 km/hSunday: Mostly clear and warm, with a high of 79°F26°C and morning low of 68°F20°C. Breezy from the NNW at 10 to 13 mph17 to 22 km/h. Sunday Night: Mostly clear, with a low around 68°F20°C. Breezy from the N at 12 to 15 mph19 to 24 km/h.
ClearHigh 78°F26°CLow 67°F19°CPrecip 0 in0 mmCloud 15%Wind N 13 mph22 km/hMonday: Mostly clear and warm, with a high of 78°F26°C and morning low of 67°F19°C. Breezy from the N at 13 to 14 mph21 to 23 km/h. Monday Night: Mostly clear, with a low around 67°F19°C. Breezy from the N at 14 to 15 mph22 to 24 km/h.
ClearHigh 76°F24°CLow 65°F19°CPrecip 0 in0 mmCloud 28%Wind NNW 13 mph22 km/hTuesday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 65°F19°C. Breezy from the NNW at 13 to 15 mph21 to 24 km/h. Tuesday Night: Partly cloudy, with a low around 66°F19°C. Breezy from the NNW at 13 to 15 mph22 to 24 km/h.
Partly CloudyHigh 75°F24°CLow 67°F20°CPrecip 0 in0.1 mm3%Cloud 53%Wind NNW 12 mph20 km/hWednesday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 67°F20°C. Breezy from the NNW at 12 to 14 mph20 to 22 km/h. Humid. Wednesday Night: Partly cloudy, with a low around 67°F20°C. Breezy from the NNW at 12 to 14 mph20 to 23 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdaySep 391°F33°C65°F18°C0 in0 mm· —11%ClearN 7 mph11 km/h
FridaySep 481°F27°C71°F22°C0.01 in0.2 mm· 6%78%Partly CloudyN 5 mph9 km/h
SaturdaySep 583°F28°C71°F21°C0.01 in0.2 mm· 9%16%ClearNNW 7 mph12 km/h
SundaySep 679°F26°C68°F20°C0 in0 mm· —14%ClearN 11 mph18 km/h
MondaySep 778°F26°C67°F19°C0 in0 mm· —15%ClearN 13 mph22 km/h
TuesdaySep 876°F24°C65°F19°C0 in0 mm· —28%ClearNNW 13 mph22 km/h
WednesdaySep 975°F24°C67°F20°C0 in0.1 mm· 3%53%Partly CloudyNNW 12 mph20 km/h
ThursdaySep 1076°F24°C66°F19°C0 in0 mm· —35%ClearNNW 12 mph19 km/h
FridaySep 1178°F25°C67°F19°C0 in0.1 mm· 3%27%ClearNNW 12 mph19 km/h
SaturdaySep 1278°F26°C67°F19°C0 in0 mm· —21%ClearN 12 mph19 km/h
SundaySep 1379°F26°C67°F19°C0 in0 mm· —20%ClearN 11 mph17 km/h
MondaySep 1479°F26°C67°F19°C0 in0.1 mm· 3%21%ClearNNW 9 mph15 km/h
TuesdaySep 1578°F26°C67°F20°C0.01 in0.2 mm· 3%24%ClearNNW 9 mph15 km/h
WednesdaySep 1677°F25°C67°F19°C0.01 in0.3 mm· 6%30%ClearNNW 9 mph15 km/h
ThursdaySep 1777°F25°C67°F19°C0.02 in0.4 mm· 6%29%ClearNNW 9 mph15 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: 38.8010°N, 9.3783°W·Elevation: 197m·Timezone: Europe/Lisbon·Population: 26,193