Climate in French Guiana

The climate across French Guiana shows moderate regional variation. Annual temperatures range from lows of 5°C in the coldest regions to highs of 22°C in the warmest areas. Annual precipitation ranges from 136mm in drier regions to 361mm in wetter parts of the country. Some regions receive significant snowfall, with up to 17cm annually, while other areas see little to none. Warmer parts of French Guiana are warm while cooler areas tend to be temperate, offering a range of conditions depending on where you go.

Temperature patterns across French Guiana vary by region, with distinct differences between areas. The Central is the warmest part of the country, with peak temperatures reaching 22°C and an annual average of 18°C. Cooler conditions are found in the Central, where winter lows drop to 5°C and an annual average of 11°C. The 7°C spread in annual averages across regions creates noticeably different conditions in different parts of the country. Regional temperature differences remain relatively consistent across seasons, with around 10°C of variation in both summer and winter. For example, Iracoubo in the Guyane averages 18°C annually, while Kourou in the Guyane averages 11°C.

French Guiana sees notable variation in rainfall across its regions, ranging from 136mm to 361mm per year. The Central receives the most rainfall, at approximately 361mm annually. The Central is the driest, with around 136mm per year. Winter tends to be the wetter season across most of French Guiana, though precipitation occurs throughout the year. The Central sees the most snowfall, with up to 17cm annually, while other parts of the country receive little to none. Visitors heading to wetter areas can expect more frequent rain than those staying in drier parts of the country.