Comment by sdeframond

It may not be enough but it does work.

When it is 40C max by day and 22C min by night, for example, the outside is still cooler than the inside at night. So ventilating will have a real impact.

With this you might reach 25-26C inside in the morning and 29C by the end of the afternoon. It is hot but generally OK with fans, depending on humidity.

Then you can turn the AC on during daytime on top of that, which makes more sense than relying only on it.