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Route turbulence forecast

San Francisco San Diego

Turbulence forecast for flights from San Francisco International Airport (SFO) to San Diego International Airport (SAN).

Mountain-wave sensitive route
Distance
719 km
388 nm
Typical duration
1h 26m
Ground-speed estimate
Cruise
FL340
34,000 ft
Jet stream
Minimal — short or tropical route

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

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What to expect on this route

Southbound · Great-circle bearing 138°

This is a short or low-latitude sector, so clear-air turbulence from upper-level jets is rare. The route crosses or passes near the Rocky Mountains, which can generate mountain-wave turbulence downwind when upper-level winds are strong.

Mountain crossings
Rocky Mountains
Ocean / water segments
North Pacific

Seasonal turbulence pattern

This corridor is most turbulent in the northern winter (Nov–Mar), when the jet stream is strongest and sits closer to the route. Wind flowing over the Rocky Mountains can generate mountain-wave turbulence that extends hundreds of kilometres downwind — most pronounced in the northern winter (Nov–Mar), when upper-level winds are strongest.

Peak turbulence
November–March (Northern Hemisphere winter)
Typically calmest
Late spring to early autumn (May–September)

SFOSAN turbulence FAQ

Is the San Francisco to San Diego flight usually bumpy?

Most of the 719 km route sits in the mid latitude band with minimal jet-stream exposure. Historically that means most flights cruise in smooth air, with turbulence limited to short sectors near weather systems. Mountain-wave effects near the Rocky Mountains add short bumpy stretches when upper-level winds are strong.

When is the best time to fly SFO to SAN for a smooth flight?

Statistically, Late spring to early autumn (May–September) 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 SFO to SAN?

Block time is usually around 1h 26m direct, cruising at approximately FL340 (34,000 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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