São Paulo/Guarulhos International Airport turbulence forecast
São Paulo, Brazil
GRU (Sao Paulo, Brazil) sits at 23.44°S, 46.47°W, 2,459 ft elevation — coastal.
About GRU
South America's busiest airport.
- Climate
- Tropical coastal — warm, humid, convective
- Geography
- Coastal — marine-influenced airmass
What to expect on departures
Computed from GRU's geography and climate
The 2,459 ft elevation puts GRU above most of the densest surface air, so initial climb is brisk but the airport itself sits inside any low-level turbulence patterns. At tropical latitude the jet stream is rarely directly overhead, so clear-air turbulence is less of a routine concern from GRU. Convective weather closer to the surface is the dominant turbulence source instead. Sao Paulo's tropical climate means convective build-up is a year-round concern — afternoon and early-evening departures from GRU encounter the most cell activity. Morning slots and red-eye departures are typically the smoothest of the day.
Climbout notes
Climbout typically transitions from cool marine air to warmer continental air — a brief bumpy layer near the boundary is normal on summer afternoons.
Turbulence conditions
Tropical thunderstorms can cause convective turbulence. Routes crossing the ITCZ may be bumpy. Trans-Atlantic routes are generally smooth.
Seasonal pattern
Convective turbulence cycles with the local wet/dry season rather than a strict calendar month — check regional rainy-season dates for the most accurate risk window.
- Peak turbulence
- Regional wet season
- Typically calmest
- Regional dry season
Departing from GRU?
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Popular routes from GRU
GRU turbulence FAQ
Is turbulence common on flights from GRU?
São Paulo/Guarulhos International Airport is best described as a tropical convective airport. The 2,459 ft elevation puts GRU above most of the densest surface air, so initial climb is brisk but the airport itself sits inside any low-level turbulence patterns.
When is turbulence worst for São Paulo flights?
Convective turbulence cycles with the local wet/dry season rather than a strict calendar month — check regional rainy-season dates for the most accurate risk window. Peak turbulence window: Regional wet season. Typically calmest: Regional dry season.
How accurate are Turbcast forecasts?
We combine live NOAA Aviation Weather Center data (PIREPs, SIGMETs, AIRMETs) with physics-based Ellrod and Richardson-number calculations derived from Open-Meteo pressure-level wind and temperature data. If a source is unavailable for a waypoint we show an em dash rather than invent a number.
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