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Weather & Climate in Grand-Santi, French Guiana
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grand-Santi has a warm climate with an average annual temperature of 79°F (26°C). Winters average 78°F in January while summers reach 79°F in July / relatively mild seasonal variation. The area gets 162 sunny days per year, below the national average of 205. Annual precipitation totals 98.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 171 feet.
Temperature
78°F Jan (25°C)
79°F Jul (26°C)
| Annual Average | 78.9°F |
| 46% above US avg | |
| January Average | 78°F (25°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 162 days/yr |
Geography
| Elevation | 171 ft (52 m) |
| Area | 1,036.4 sq mi (2,684.2 km²) |
| Population Density | 9/sq mi |
| Coordinates | 4.2730°N, 54.3815°W |
| Timezone | America/Cayenne |
Precipitation & Snow
Air Quality
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 78°F (25°C) | 9.2 in | Coldest |
| February | 78°F (25°C) | 7.3 in | |
| March | 78°F (26°C) | 8.7 in | |
| April | 79°F (26°C) | 10.5 in | |
| May | 79°F (26°C) | 15.2 in | Wettest |
| June | 78°F (26°C) | 12.6 in | |
| July | 79°F (26°C) | 9.3 in | |
| August | 80°F (27°C) | 6.6 in | |
| September | 80°F (27°C) | 3.5 in | |
| October | 81°F (27°C) | 3.0 in | Warmest, Driest |
| November | 80°F (27°C) | 4.5 in | |
| December | 79°F (26°C) | 8.0 in |
Grand-Santi has a seasonal temperature swing of 3°F / from 78°F in January to 81°F in October. Total annual precipitation is 98.1 inches, with May being the wettest month (15.2") and October the driest (3.0").