Rainy.
It is the end of the tropical storm season. At this time of year, the big storms are much less of a threat, but they rarely impact the Bay Islands even in the worst parts of the season.
Arguments abound about "which side" of the islands is _____ (fill in the blank), but when the rains arrive with the standard winds from the North, your dive-op better be on the South side or have the demonstrated wherewithal to get you over to the calm South on a daily basis.
Mean rainfall (inches) for Coxen Hole, Roatan, for the years 1970-1979:
Jan 5.8
Feb 6.2
Mar 1.6
Apr 2.4
May 1.7
Jun 2.1
Jul 3.1
Aug 4.1
Sep 7.1
Oct 17.6
Nov 20.6
Dec 12.9
Total 85.2