The hurricanes start developing in the N Atlantic, off the coast of
Africa. As mentioned before, they come across the tropical zone in what is called "tropical waves" then develop into tropical depressions, tropical storms and eventually hurricanes. Sept/Oct being the worst months. However, Aug can be risky, July.....not so much.
You might want to consider hopping down the W coast of
Africa to
Cape Verde:
http://en.wikipedia.org/wiki/Cape_Verde#History
From there, you could drop down to 10N and
motor the 900 miles to Trinidad, staying below the tropical belt. From Trinidad, you could move to Panama more safely and have plenty of warning of impending storms.
IMHO, sailing direct from the
Med to Panama without dropping below 10N would be extremely risky. No matter how good the
forecast and how much warning you have, it is impossible to maneuver out of the path of an on-coming tropical system. The biggest problem is knowing which way to run. If you
head south, it may turn south.