Good evening. Let me try to answer all of your questions and then offer some suggestions:
1. There are several nice communities you could live in that meet that general description. I would need some more information such as how many bedrooms you need, the number and age of your children (make sure to get you in a good school district) and any other specific needs such as lot size, etc. Just off the top of my head, there are several communities in Clear Lake, Webster and Friendswood that are close.
2. It is definitely humid and hot! The worse months for heat are actually July and August. The weather will turn nice in late September and October and won't start getting brutally hot again until May. Swimming pool is a great idea and will provide relief. A covered patio would be a nice touch as well.
3. The beaches honestly aren't too great, but Galveston has come a long way and offers a lot or recreational, lodging and dining options. Moody Gardens is great, they have the Pleasure Pier now and of course The Strand.
Send me an email at firstname.lastname@example.org and I can mail you out a relocation package. We have a phenomenal relocation department being a Sotheby's owned company and I would be glad to help.