Last summer I carried my S&W J Frame .38 snubbie in a Don Hume pocket holster in cargo shorts. I live in Florida, so that works well with any shirt. I now also have a S&W Shield which I carry in a Kydex IWB from a gun show. Good holster. Gun is fitted to it, it is comfortable to carry. As long as I have a belt, I will probably carry that this summer. I just make sure I buy long Tees or golf shirts.
For work days, I still use the J Frame and pocket holster.
Florida can be a challange with the heat, shorts and tees, but it can be done. My SR9c is much harder to carry in the summer, and is more of a Winter carry as there are more clothes to conceal it.