The wind model doesn't simulate terrain well

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Are you using Developer Mode or made changes in it?


Have you disabled/removed all your mods and addons?

Irrelevant. I have no mods that affect weathers.

Brief description of the issue:

Especially in Asia Pacific there are lots of airports famous (notorious) for very biased winds (RCSS, RJSS, RJOO, RJOT… the list goes on) due to terrain features. This is not well-modeled in the game, causing in-game wind often blow on wrong direction from real life i.e. causing player to have to choose between tailwind landing/takeoff and going against live traffic. For example I have personally made more RJOO RWY 14 takeoff/landings than a whole year’s share IRL (where there’s only single digit landings per year on the RWY 14 side).

Some airports with biased wind but not caused by terrain seems to be a lot more accurate on that (e.g. RCTP. Never had the “go against traffic” issue, expect for the ATC’s inability to change runway when wind changes mid-flight.)

Provide Screenshot(s)/video(s) of the issue encountered:

Provide coordinates (DevMode > Options > Display position)

As described by airport ICAO code.

Provide time & date of the observed Weather issue

any date/time as these airports should have rather constant winds.

Detailed steps to reproduce the issue encountered:

Go to an airport with biased runway usage, then observe frequency of in-game wind going against that trend. Also observe live traffic disagreeing with in-game wind.

PC specs and/or peripheral set up if relevant:


Build Version # when you first started experiencing this issue:


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