In Texas you can fish from the bank year around with a good chance of catching fish. The winter is probably the slowest time, but you can still catch easily catch carp, buffalo, and catfish in the winter. Winter is the Texas trout stocking season and trout are available throughout the state. You can also winter bank fish for striper, hybrid striper, and largemouth bass is you can find a place to reach deep water. I think June is probably the best month. Everything is in reach of bank anglers in the summer months. Catfish, bass, sunfish, and carp are all available. Saltwater fishing, both inshore and offshore, is available year around. Some bodies of water are better for one species of fish than another, so don't get hung-up on one species. I have fished throughout the country and I believe Texas has a more diverse fishery than any other state.