On average, a flight from New York to French Guiana takes 24 hours 30 minutes. Flights to French Guiana from other popular cities in USA will vary in length. Below are a few examples of popular routes and their flight times.
In terms of precipitation, rainfall in French Guiana ranges from 1.6 - 20.1 inches per month. May is typically the wettest month, when rainfall can reach 20.1 in. September is typically the driest time to visit French Guiana when rainfall is around 1.6 in.
If weather is an important factor for your trip to French Guiana, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).