Climate almanac
Grand-Santi
Guyane, French Guiana · 4.27°, -54.38°
What is the climate like in Grand-Santi?
The best time to visit Grand-Santi is typically September – October, with trip comfort peaking in October (7.3/10). Grand-Santi is warmest in October, when daily highs average 94°F (34°C), and coolest in January, when lows fall to about 73°F (23°C). The wettest month is typically May and the driest is October; the year sees roughly 89 in (2260 mm) of precipitation.
- Best time to visitSeptember – October — comfort peaks in October (7.3/10)
- Warmest monthOctober — average high 94°F (34°C)
- Coolest monthJanuary — average low 73°F (23°C)
- Wettest monthMay (17 in (435 mm))
- Driest monthOctober (1.6 in (41 mm))
- Annual precipitation89 in (2260 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromMaripasoula, 81 km away (1973-2026)