no cold air comes out on hot sunny day on 1995 Honda Civic

freon charged 2 time already. The car was parkied under hot sunny day, turn on air condition nothing but warm air comes out. If turn on early in the morning cold air comes out ok. its just if the car parked hot sunny day then turn on air condition warm air comes out. My mechaninc could not figure out why its doing this.

Asked by for the 1995 Honda Civic
When it's hot out, does it EVER get cold - is it just slow? Or it doesn't ever get cold at all?

You could have a few things going on. Make sure the charge is correct for the vehicle. Undercharged air conditioning will cause performance issues. Is the compressor running? You could have a weak compressor coil, or a pressure switch issue.