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Monthly climate in Saint-Georges, French Guiana

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Saint-Georges features a tropical rainforest climate (Af). Temperatures typically range between 25 °C (78 °F) and 28 °C (82 °F) through the year, but rarely can drop to 21 °C (70 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 2807 mm (110.5 inches) and receives 272 rainy days on the 1 mm (0.04 inches) threshold annually. Saint-Georges enjoys an average of 3277 hours of sunshine throughout the year, and daylight varies from 11 hours 53 minutes to 12 hours 19 minutes per day.

Monthly average temperatures in Saint-Georges, French Guiana

The warmest months in Saint-Georges are September, October and November, with daily mean temperatures ranging from 27 to 28 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and May, when daily mean temperatures range from 25 to 26 °C (78 - 79 °F) throughout the day. On average each year, Saint-Georges experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Saint-Georges. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum31°C
(88°F)		31°C
(87°F)		32°C
(89°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		33°C
(92°F)		34°C
(94°F)		34°C
(93°F)		33°C
(92°F)		32°C
(90°F)
Mean maximum30°C
(86°F)		30°C
(86°F)		31°C
(88°F)		31°C
(88°F)		31°C
(88°F)		31°C
(87°F)		32°C
(89°F)		32°C
(91°F)		34°C
(93°F)		34°C
(93°F)		33°C
(91°F)		31°C
(89°F)
Average high28°C
(83°F)		28°C
(83°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		29°C
(85°F)		30°C
(86°F)		31°C
(88°F)		32°C
(90°F)		32°C
(90°F)		31°C
(88°F)		29°C
(84°F)
Daily mean25°C
(78°F)		26°C
(78°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		27°C
(81°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		26°C
(79°F)
Average low23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(75°F)
Mean minimum22°C
(71°F)		22°C
(72°F)		22°C
(73°F)		23°C
(73°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		22°C
(72°F)		23°C
(73°F)		23°C
(73°F)		23°C
(73°F)		22°C
(73°F)
Minimum21°C
(70°F)		21°C
(71°F)		22°C
(72°F)		22°C
(73°F)		23°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		22°C
(73°F)		22°C
(73°F)		22°C
(73°F)		22°C
(71°F)

Compare climate in Saint-Georges with other places

Compare temperature, precipitation, sunshine, UV index in Saint-Georges, French Guiana with other places around the world.

Monthly average precipitation in Saint-Georges, French Guiana

Saint-Georges usually has the most precipitation in April, May and June, with an average of 28 rainy days and 396 mm (15.6 inches) of precipitation per month. The driest months in Saint-Georges are August, September and October. On average, 72 mm (2.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Saint-Georges. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)249 (9.8)224 (8.8)208 (8.2)367 (14.4)483 (19.0)338 (13.3)234 (9.2)121 (4.8)49 (1.9)47 (1.9)174 (6.8)314 (12.4)
Average precipitation days (≥ 1 mm)22212427302927199122329

Monthly sunshine hours in Saint-Georges, French Guiana

The sunniest months in Saint-Georges are August, September and October, when the sun shines an average of 11 hours 3 minutes a day. Least sunny months in Saint-Georges: January, February and May receive an average of 7 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Saint-Georges. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours212225281228205253312337337341285256
Mean daily daylight hours11h 54m11h 59m12h 4m12h 11m12h 17m12h 19m12h 18m12h 13m12h 7m12h 0m11h 55m11h 53m

Solar UV radiation in Saint-Georges, French Guiana

Saint-Georges experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 16, which corresponds to the Extreme category of sun exposure. June, July and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 12. For more detailed information, check out our hourly Saint-Georges UV Index data.

Average daily maximum UV levels by month for Saint-Georges. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)131416161412121313131312