Climate of French Guiana, France
Area-weighted average across French Guiana. For where people actually live and travel, see the cities below.
French Guiana, a subdivision of France, has a tropical climate on average. Area-weighted monthly temperatures across the whole territory range from 24.8°C / 76.6°F in January to 26.3°C / 79.3°F in September, with rainfall from 74 mm / 2.9 in to 407 mm / 16 in depending on the season (2706 mm / 106.5 in total across the year). See the 2 cities listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 24.8°C76.6°F | 286 mm11.3″ | Tropical |
| February | 24.8°C76.6°F | 238 mm9.4″ | Tropical |
| March | 25.2°C77.4°F | 274 mm10.8″ | Tropical |
| April | 25.5°C77.9°F | 330 mm13″ | Tropical |
| May | 25.6°C78.1°F | 407 mm16″ | Tropical |
| June | 25.4°C77.7°F | 324 mm12.8″ | Tropical |
| July | 25.5°C77.9°F | 207 mm8.1″ | Tropical |
| August | 26°C78.8°F | 142 mm5.6″ | Tropical |
| September | 26.3°C79.3°F | 82 mm3.2″ | Tropical |
| October | 26.3°C79.3°F | 74 mm2.9″ | — |
| November | 26°C78.8°F | 119 mm4.7″ | Tropical |
| December | 25.3°C77.5°F | 223 mm8.8″ | Tropical |
Frequently asked questions
What is the best time to visit French Guiana?
French Guiana, France does not have a clear sunny-and-dry window by our cutoffs. The warmest month is September at 26.3°C / 79.3°F, and the driest is October at 74 mm / 2.9 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of French Guiana?
French Guiana, France has area-weighted monthly average temperatures ranging from 24.8°C / 76.6°F in January to 26.3°C / 79.3°F in September. Annual rainfall averages about 2706 mm / 106.5 in, with the wettest month being May (407 mm / 16 in) and the driest October (74 mm / 2.9 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in French Guiana?
The hottest month in French Guiana is September, with an area-wide average temperature of 26.3°C / 79.3°F.
What is the coldest month in French Guiana?
The coldest month in French Guiana is January, with an area-wide average temperature of 24.8°C / 76.6°F.
When does it rain most in French Guiana?
The wettest month in French Guiana is May, averaging about 407 mm / 16 in of rainfall. The driest is October with about 74 mm / 2.9 in.