You can download the Atlantic Pilot
Charts free from:
Maritime Safety Information
and then check month by month for what to expect on average for the
route. You will notice as you look at page 3 of each month (The
Caribbean Basin page) that there is a "bull-eye" that sits between Jamaica and
Columbia. This is a nasty weather/seas area that grows and shrinks with the different months of the year.
- - So the prudent cruiser will
head more directly south from the east side of Jamaica to make landfall close the the eastern Columbian border and then turn west along the coast to
Cartagena. Or if you want to do the longer route you leave the western end of Jamaica and
head for Providencia and
Panama and then loop around to Cartagena.
- - The
current weather and season will give you an indication of which will be best for your situation.