Aviation weather in East Asia

Typhoon season, the strongest jet stream on the planet and the clear-air turbulence that comes with it, plus spring dust transported from the interior across busy northern approaches.

At a glance

Main hazards Tropical cyclones, Turbulence, Low-level windshear, Snow and contamination, Dust and sand
Most demanding season July – October
Thunderstorm season June – September
Representative airports RJTT · ZBAA · RKSI · VHHH · ZSPD
Official sources Japan Meteorological Agency · Hong Kong Observatory windshear alerting

The services linked above are the authoritative source for this region. This page explains what their reports contain; it is not a substitute for an official briefing.

What these hazards mean

Tropical cyclones Typhoons, hurricanes and cyclones close airports for days and reshape the route network for a week either side.
Turbulence Clear-air, mechanical or convective. The clear-air kind gives no visual warning and is why the seatbelt sign stays on in cruise.
Low-level windshear A sudden change of wind speed or direction near the ground, usually from a microburst or a sea breeze front, on the part of the flight with the least margin.
Snow and contamination Snow, slush and ice on the runway cut braking action and change the accelerate–stop distance; de-icing adds holdover-time arithmetic.
Dust and sand Blowing dust drops visibility within minutes and erodes engine components; the reports code it as DU, SA, DS or SS.

METAR decoder

Paste a raw observation and read it in plain language. It runs in your browser — the report never leaves your device, and nothing is stored.

Works with ICAO reports and with the North American SM / inHg variant.

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Last updated 2026-08-09 by aviationwheater.siten.co · About us

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