One of the most sought after weather routers for this area is Chris Parker of Caribbean Weather @ 4.045 mHz USB SSB
starting at ~0730 hrs. Many boats will be traveling this route during the fall and spring and if you dont have a SSB
you can listen-in on a portable HF receiver with external antenna.
Also PassageWeather - Sailing Weather - Marine Weather Forecasts for Sailors and Adventurers
& NOAA ocean prediction center: Ocean Prediction Center