I'm in Diamond Cay and can see the north swell (less than 1m) breaking on the other side of the reef and there's only a very slight rolling noticeable in the anchorage. I left CGB last night because of the weather reports of a north swell, but I gather it was calm there last night as well. But as of tomorrow the waves pick up a bit, the period lengthens and the wind is up a bit too; so I'd expect CGB to be uncomfortable.
Here's a picture of me leaving CGB at first light after I missed the weather report and a north swell set in during the night. I had surfers going past me in the other direction as I left...