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Route turbulence forecast

Hong Kong Sydney

Turbulence forecast for flights from Hong Kong International Airport (HKG) to Sydney Kingsford Smith International Airport (SYD).

Tropical convective route
Distance
7,394 km
3,992 nm
Typical duration
9h 06m
Ground-speed estimate
Cruise
FL390
39,000 ft
Jet stream
Minimal — short or tropical route

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Get a segment-by-segment turbulence forecast for any scheduled flight from HKG to SYD, with live wind and pilot reports.

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What to expect on this route

Southbound · Great-circle bearing 147°

This is a short or low-latitude sector, so clear-air turbulence from upper-level jets is rare. At tropical latitudes, convective turbulence from thunderstorms is the main driver — pilots generally route around storm cells, but afternoon/evening flights encounter more build-up than morning departures. A large portion of the flight crosses open ocean (North Pacific), where upper-level conditions are generally smoother than over continental terrain.

Ocean / water segments
North Pacific · Tasman Sea · South Pacific

Seasonal turbulence pattern

This corridor is most turbulent in the relevant hemisphere’s winter, when the jet stream is strongest and sits closer to the route. At tropical latitudes, convective (thunderstorm-driven) turbulence dominates during regional wet seasons and monsoon cycles, typically worst in the afternoon and evening.

Peak turbulence
Regional wet season (varies by location)
Typically calmest
Dry season

HKGSYD turbulence FAQ

Is the Hong Kong to Sydney flight usually bumpy?

Most of the 7,394 km route sits in the tropical band with minimal jet-stream exposure. Historically that means most flights cruise in smooth air, with turbulence limited to short sectors near weather systems.

When is the best time to fly HKG to SYD for a smooth flight?

Statistically, Dry season sees the calmest conditions for this corridor. Within any season, morning departures see less convective (thunderstorm-driven) turbulence than afternoon flights.

How long is the flight from HKG to SYD?

Block time is usually around 9h 06m direct, cruising at approximately FL390 (39,000 ft). Actual duration varies with winds — tailwinds can shave 15–30 minutes, headwinds can add 30+ minutes on this southbound sector.

How accurate is Turbcast's forecast for this route?

We use live NOAA Aviation Weather Center pilot reports (PIREPs), SIGMETs and AIRMETs, layered with physics-based Ellrod and Richardson-number calculations 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 value.

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