The culture of French Guiana, is very similar to that of the English speaking Caribbean, so much so that Guyana is considered a Caribbean Nation. Guyana shares similar interests with the islands of the West Indies.
French Guiana, as part of France, forms part of the European Union - the largest landmass for an area outside of Europe (since Greenland left the European Community in 1985), with one of the longest EU external boundaries. It is one of only three European Union territories outside Europe that is not an island (the others being the Spanish Autonomous Cities in Africa, Ceuta and Melilla).
If you are planning to visit the French Guiana, you should definitely know something about its weather. That way you will have the appropriate clothing.