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✈️ Lima (LIM) ⇄ San Juan (SJU): turbulence forecast

Checking whether your LIM–SJU flight will be bumpy? RideScore samples the live forecast winds at cruise altitude along the actual Lima–San Juan route and scores every leg of the flight, in plain English.

Live forecast LIM → SJU SJU → LIM
Distance3,600 km / 2,235 mi
Est. flight time~4h 44m
Time difference1h time ahead at SJU
AirportsJorge Chávez Intl · Luis Munoz Marin Intl

What makes this route bumpy (or not)

Part of this route runs through the tropics, where the main turbulence driver is convection — building storm clouds, especially in the afternoon and in the wet season. Crews routinely deviate around the buildups, so brief detours are normal.

How the forecast works

RideScore reads the same global weather models professionals use (NOAA GFS / ECMWF via Open-Meteo), computes wind shear, jet-stream strength and storm energy at up to 11 points along the LIM–SJU great-circle, and turns it into a simple 0–10 bumpiness score for each leg of your flight — plus recent pilot reports from aircraft that just flew nearby. It's free, with no account and no tracking, and works up to 16 days ahead.

Common questions

Is the LIM to SJU flight usually turbulent?
It varies day to day with the winds aloft. Part of this route runs through the tropics, where the main turbulence driver is convection — building storm clouds, especially in the afternoon and in the wet season. Crews routinely deviate around the buildups, so brief detours are normal. Check the live forecast on RideScore just before you fly — it samples the actual forecast winds along the Lima–San Juan route at cruise altitude.
How long is the flight from Lima to San Juan?
The great-circle distance is about 3,600 km (2,235 miles), which works out to roughly 4h 44m in the air depending on winds and routing.
Is turbulence on this route dangerous?
No — turbulence is uncomfortable, not dangerous to the aircraft. Modern jets are built for far worse than anything encountered in normal service, and pilots route around the roughest air. Keep your seatbelt fastened and it is a non-event.

More routes from Lima (LIM) · More routes from San Juan (SJU)

This page shows typical route characteristics; conditions on your day will differ — run the live forecast. Estimates only, not an aviation weather briefing. © 2026 RideScore · made with ❤️ in Amsterdam · About · Terms