You can bring your winter coat and jackets from Wyoming and wear it here...Everybody will think you're a wierdo and leave you alone...And you can still conceal!!!...Just kidding!!..A loose vest will do the trick unless you mind sweating your ass off in 90F weather...I wear loose t-shirts and short sleeve shirts, untucked, and my IWB, shorts all the time..Depends what kinda gun you have...1911 is harder to conceal than the Ruger LCP!!..Have a safe trip!!!