Win At Life said:
There is no beach in Texas with blue water any time of the year ever. What you are describing doesn't exist anywhere in the US gulf outside of Destin Florida.
If your choices are pretty Texas beach or Hill country, the answer is hill country, because the former doesn't exist.
That really is not completely correct. Seen and experienced blue water frequently on South Texas beaches. Most common in very late summer through mid fall depending on water temp and current.
Some years are better than others. Water temp on South Texas beaches is really enjoyable as well. Blue water is also commonly seen on South Western Florida beaches. For crowds, access, freedoms, price, Mexican food, and cleanliness i will take South Texas beaches in the gulf over the others.