At what wind speed can I fly above the sea? Chance of tipping over?

[IceFireSoul]

That, pretty much. I am planning on doing 35 km/hr wind over the sea at low altitudes. Almost dis it today

is it OK?

 

[Stephan]

I did this the other day, watch out for spray and make sure you have enough battery and wind with you on return. Hair raising but some good footage

 

[Meta4]

at-what-wind-speed-can-i-fly-above-the-sea-chance-of-tipping-over.
I am planning on doing 35 km/hr wind over the sea at low altitudes.

You can fly in any wind speed - but if the wind speed is faster than your Phantom can fly, you won't be able to make headway against it.
The Phantom won't tip over in the air.
Your question suggests a lack of experience so I will warn that it sounds like what you are tinking of might be a quick way to lose your Phantom.
You shouldn't be trying this until you've had enough experience that you'd be able to answer this yourself.

 

[IceFireSoul]

I have more than 500 hours on p1, p2 and now p3. I do understand that wind up to around 40 km/h should be OK for phantom flying at 61. But today I saw the camera yaw a bit around that lighthouse; which suggested extreme inclination to me; so I got worried "what if"..