Typically 15kts max crosswind for A/L [AutoLand] B74. Some carrier SOPs are max 10kts. But CAT-III weather is usually associated with heavy fog which is not condusive to a lot of wind. [CAT-IIIc is zero-zero]. The hard part in any CAT-III condition [fog] is not about landing, but about taxiing and finding your assigned parking spot, or gate without clipping your winglets or running into something.
