Is Okinawa worth visiting in late March?

Couple in our 30’s doing a couple months in south east Asia, last stop is Japan on our way home to Vancouver. Spending 2 and a half weeks in Japan (already did a week in Tokyo at the beginning of our trip on our way over). Just wondering if stopping in Okinawa in late March for 4-5 days is a good idea, considering the weather and maybe beaches/things not being open?

Thanks for the help!