We have a procedure - wind shear precautions - which is used when wind shear probability may exist, but doesn’t warrant avoidance. This procedure, among other things, requires a Flap3 landing.
CM
It is a bit paradoxical in Airbus that Flap3 gives better performance in wind sheer but Flap full gives better handling in turbulence. It's due reduced gain in flaps full. Controls are more sensitive in Flap3