They're certainly not silent, but unless you're actually standing right under one they're rarely particularly noisy. Modern ones should be about 35 decibels at 300 meters distance. You're never going to hear an offshore one, really.
I have some wind turbines near my town. I can walk right up to the pole, and I can't hear any noise from the turbine.
Light car traffic is ~50dB.
I have some wind turbines near my town. I can walk right up to the pole, and I can't hear any noise from the turbine.
Light car traffic is ~50dB.