[jbmorgado]

That's because "next", and "this" refers not to the day but to the week.

It's the same in some latin languages as well and I think it makes sense, you are already naming the day with "Friday" if you are going to give some more information it should be about some other time measurement - in this case, the week - or it would just be superfluous information.

[StavrosK]

But if it's Thursday, and you say "next Wednesday", you don't mean "in six days", you mean in thirteen.

[Sleeep]

No, I would mean six days, not 13. Guess it's ambiguous between different people but I always understood it like the GP explained.

[StavrosK]

How about "let's meet this Wednesday" then?

[Sleeep]

To me "this Wednesday" has already passed in your example and people don't normally make appointments for the past.

[jbmorgado]

Not really, not in English and not in Spanish or Portuguese.

"Next Wednesday" means "Next week's Wednesday" in all cases. It's not ambiguous.

[StavrosK]

Huh, interesting. In Greek, we say "(this) Wednesday" (whichever one comes next), and "next Wednesday" (the one that comes after the next one). Weeks don't factor into it at all.