Getting weather info in the South Caribbean

[NickCreak]

Dear all,
I've looked hard but cant find any clear information on this.
I'm going to be heading up from Trinidad to the BVI's and then back down on an extended trip. Leaving in November and returning in June

Currently unsure how I would get weather reports without the internet.
I have heard sometimes this is broadcast over VHF, or 'ask other yachties' but obviously I'd rather be self reliant.

Any experience of this and the best way to go about it?
Any help greatly appreciated