Normal
I can't tell you about sea conditions. I think that's hard to determine anyway. I CAN tell you it "will probably" be chilly in April, not only leaving from here, but in Bermuda also. Bermuda is NOT a Caribbean island. I was in Bermuda over Memorial Day weekend one year and it was chilly. Just be sure to bring some layered warm clothes (i.e. sweaters and sweat shirts/jackets) I am sure you will have a great cruise! And Michael is right~you are going to LOVE the Miracle!