Incorrect wind speed when using custom weather for US/Hybrid/Metric

Sim Update 4 Beta | MSFS 2024 Weather & Live Weather
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ISSUE DESCRIPTION

Description of the issue: wind speed in custom weather is wrong for US System/Hybrid/Metric

Weather settings: custom weather, use clear sky as an example

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)? always

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

US System:

  1. go to settings/language
  2. set units of measurement to US System
  3. spawn at a runway
  4. open the weather window, select clear sky
  5. set ground wind direction to same heading than the aircraft, set wind speed to 20kt (as an example)
  6. check in little navmap (or other tool) reported wind speed
  7. notice that wind speed is 10kts instead of 20kts

Hybrid:

  1. go to settings/language
  2. set units of measurement to Hybrid
  3. spawn at a runway
  4. open the weather window, select clear sky
  5. set ground wind direction to same heading than the aircraft, set wind speed to 20kt (as an example)
  6. check in little navmap (or other tool) reported wind speed
  7. notice that wind speed is 10kts instead of 20kts

Metric:

  1. go to settings/language
  2. set units of measurement to Metric
  3. spawn at a runway
  4. open the weather window, select clear sky
  5. set ground wind direction to same heading than the aircraft, set wind speed to 10m/s (as an example)
  6. check in little navmap (or other tool) reported wind speed
  7. notice that wind speed is 10kts instead of 19kts

Note: I did not test the wind gust speed but I assume it may face the same issue so needs to be reviewed too

YOUR SETTINGS

If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.

What peripherals are you using:

[PC Only] Are you using Developer Mode or have you made any changes to it?

[PC Only] What GPU (Graphics Card) do you use?

[PC Only] What other relevant PC specs can you share?

MEDIA

US System

Screenshot (1607)
Screenshot (1607)1918Ă—949 71.7 KB

Screenshot (1608)
Screenshot (1608)3840Ă—1025 529 KB

Hybrid

Screenshot (1609)
Screenshot (1609)1918Ă—950 72.9 KB

Screenshot (1610)
Screenshot (1610)3840Ă—1027 530 KB

Metric

Screenshot (1611)
Screenshot (1611)1922Ă—944 73.4 KB

Screenshot (1612)
Screenshot (1612)3840Ă—1029 530 KB
2

I had a similar experience. Although I didn’t investigate it in such detail, it seemed like some unit conversion issue. The wind speed units displayed in the weather console are kts. When I entered a wind speed of 15kts, closed the console, re-opened it, the wind speed was changed to 29-something. This makes me suspect that there is some unit conversion (kts > m/s) happening either when saving the data but not when retreiving it, or vice versa.

3

Definitively it is.

Do you have “Hybrid” setup as Unit of Measure ?
I have created another report for that specific scenario: Wind speed incorrectly saved when using a Weather Custom Preset in Hybrid mode

5

Thank you for the bug report.

We have created an internal ticket to see if our team already has this logged, and if not they will attempt to reproduce the issue and create a new bug report. This item is now marked as feedback-logged. If there is an existing bug report or one is created, we will move this thread to bug-logged.

1 Like
6

I can’t check to be sure atm, but I think I did once change it to hybrid (I’m European, so it seemed more appropriate).

7

When fixing this, please only fix the conversion when storing the data but keep wind speed in the UI in hybrid mode in kts (and not in m/s or km/h), for this is how wind speed is reported in aviation weather reports and it makes more sense when planning a flight. :folded_hands:

1 Like
8

Same here. Had a couple of flights yesterday where weather reports at and around runway reported 11 knts. windspeed. On final these where at least doubled to 22-24 knts. I am using hybrid settings. Happened the last 2 days. This was all with live weather. Will test again today.

9

Do you remember which reports ? ATC, ATIS, Metar ?

10

It was in the tablet, but on the online version, flightplanner.microsoft. etc. at EDDV Runway 22r wind parameters 11knts. In game 22-24knts at landing.

1 Like
11

I’ll also test. Since it is Live weather related maybe a separate report will be needed even if somehow related to a conversion issue.

12

Just tested at EDDV, Live weather, hybrid. Windspeed seems correct, yes the speed can double but it is due to gusts as reported in the metar:

No gust, wind speed in little navmap matches the metar:

Screenshot (1658)
Screenshot (1658)3840Ă—1090 418 KB

Wind speed doubles but due to gusts, then it is back to normal after few seconds:

Screenshot (1655)
Screenshot (1655)3840Ă—1090 416 KB
1 Like
13

Additional test at KMCO, custom weather, adding the debug weather information:

US

Screenshot (1659)
Screenshot (1659)3840Ă—1090 446 KB

Hybrid
Screenshot (1660)
Screenshot (1660)3840Ă—1090 447 KB

Metric
Screenshot (1661)
Screenshot (1661)3840Ă—1090 446 KB
1 Like
14

Are you using On air Company? I am, and it may be the cause of my problem.

:brain: The Root Cause — “Time Sync Overrides Weather”
When you start tracking in OnAir Company, the client does two things simultaneously:
It sets your sim time to match the server time (to ensure logs and flight times are accurate).
It pings the sim’s SimConnect weather/time system to confirm environmental data.
The problem is that in MSFS 2024, when the time is force-changed while Live Weather is active, the sim often:
Resets or desynchronizes the live-weather stream, and
Temporarily loads clear-skies default weather or an outdated METAR snapshot.
This can make it appear as if:
The wind suddenly flips 180°,
ATC assigns an incorrect runway (tailwind landings), or
You get unrealistic weather (40-kt tailwind, fog in clear areas, etc.).
It’s not that OnAir itself “creates” wrong weather — it just triggers MSFS to re-request weather when time syncs.
:gear: How to Confirm
You can easily see it happen:
Start MSFS with Live Weather enabled.
Before connecting OnAir, note the surface wind (from the G1000 or METAR overlay).
Start flight tracking in OnAir — watch the weather reload.
You’ll often see a jump in time and a complete weather refresh → that’s the culprit.
:white_check_mark: Fix / Workarounds
Option
What to Do
Effect
Set time before connecting
In MSFS, manually set the local time to match OnAir’s UTC before starting tracking. Then start OnAir.
Prevents OnAir from forcing a time change → weather stays stable.
Start OnAir, then load flight
Start flight tracking before loading into the cockpit, so OnAir sets the time once before Live Weather initializes.
MSFS loads weather correctly from start.
Use “Fixed Local Time” in OnAir settings
In OnAir client → Settings → Realism → disable “Sync sim time with server”.
No forced time change = no weather reset.
Quick recovery if it happens
In-sim, switch weather to Custom → Live Weather again. It forces MSFS to reload the correct live layer without restarting the sim.
Fixes wrong wind/runway instantly.
:airplane: What’s Actually Safe
You can safely toggle weather back to Live during the flight — it will reload the proper METAR and restore the correct winds.
ATC (whether in-sim or SayIntentions) will then immediately correct the runway assignment.
Your OnAir tracking continues unaffected.
:puzzle_piece: Why it’s particularly visible now
MSFS 2024 changed how live weather binds to UTC time — so when a program (like OnAir) touches time offset, it also refreshes the weather server call. In MSFS 2020, this wasn’t an issue, but now it is.

15

No, I am not using any addons/mods to test. Could you also test without any addons and report back ?