The average monthly temperatures in Martinique remain remarkably stable, varying by only about 5° year-round. This stability is attributed to the tradewinds which bring refreshing breezes from the northeast throughout the year. December through May is the dry season, while June through November is considered the more humid season. Average air temperatures in coastal areas range from 22° to 30° C (72° to 86° F) which allow yacht charter in Martinque all year long.
We spent a week in La Martinique on our catamaran, lots of wonders to be discovered from the south side to the north one (the rainforests and especially the unique black sand beaches!!!)... One more thing, avoid Fort-de-France ;)