Hurricanes always move from east to west.

That is what they normally do, but what they not always do.
As we had to discover in 1985 with hurricane Klaus and 1995 with hurricane Lenny: They can go from west to east, too.

Hurricane season ends with end of October.

That is when it normally ends, but not always.
There were a lot of November hurricanes and even some December hurricanes (1875, 1884, 1887, 1953, 1954, 1975 and 2003, this one coming from the Cape Verdes to the Eastern Caribbean crossed the tracks of yachts sailing from the Canaries to the Caribbean during the "safe" December).

Hurricanes are infrequent.

Even if there have been periods when the Eastern Caribbean has been completely hurricane-free for years:
There were 57 years between 1871 and 1991 with 9 or more hurricanes per year (17 in 1887, 14 in 1926, 21 in 1933 and 16 in 1936).

Hurricanes stay well north of Grenada and the southern East Caribbean chain.

Neither Grenada nor Trinidad are immune and were badly hit by hurricanes and tropical depressions in the past.
Only the inner harbor of Puerto la Cruz, Venezuela, has never been hit or hard brushed by a hurricane. But the Venezuelan mainland including Puerto la Cruz is an unsafe place because of heavy crime and the actual political situation....