French Guiana Climatic Classifications

CodeDescriptionGroupNumber of states/regionsStates/regions
AfTropical rainforestTropical2 Cayenne Saint-Laurent-du-Maroni

Summary: Most regions (2) in French Guiana lie in the Tropical rainforest climate zone (Köppen: Af). The mean average of annual temperatures range from a high of 27.51°C (81.52°F) in Saint-Laurent-du-Maroni to a low of 27.39°C (81.3°F) in Cayenne.

Climate French Guiana: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)29.65(85.37)29.14(84.45)29.67(85.41)29.86(85.75)29.71(85.48)29.83(85.69)30.78(87.4)32.07(89.73)33.06(91.51)33.49(92.28)32.3(90.14)30.38(86.68)33.49(92.28)
Average high °C (°F)28.86(83.95)28.41(83.14)28.96(84.13)29.16(84.49)29.15(84.47)29.52(85.14)30.32(86.58)31.48(88.66)32.29(90.12)32.55(90.59)31.53(88.75)29.71(85.48)30.16(86.29)
Daily mean °C (°F)26.62(79.92)26.31(79.36)26.81(80.26)27.05(80.69)27.06(80.71)27.03(80.65)27.33(81.19)28.05(82.49)28.7(83.66)28.96(84.13)28.36(83.05)27.14(80.85)27.45(81.41)
Average low °C (°F)23.16(73.69)23.27(73.89)23.55(74.39)23.83(74.89)23.94(75.09)23.34(74.01)22.98(73.36)23.15(73.67)23.53(74.35)23.79(74.82)23.84(74.91)23.52(74.34)23.49(74.28)
Record low °C (°F)22.33(72.19)22.58(72.64)22.84(73.11)23.15(73.67)23.31(73.96)22.6(72.68)22.26(72.07)22.31(72.16)22.6(72.68)22.86(73.15)22.95(73.31)22.7(72.86)22.26(72.07)
Average precipitation mm (inches)99.25(3.91)106.37(4.19)83.73(3.3)153.39(6.04)217.23(8.55)181.83(7.16)120.83(4.76)73.0(2.87)33.17(1.31)24.21(0.95)73.4(2.89)145.89(5.74)109.36(4.31)
Average precipitation days (≥ 1.0 mm)16.3717.5515.8119.1823.1821.4520.7313.787.866.2710.3716.9515.79
Average relative humidity (%)81.9283.3681.7683.0785.4185.283.1380.0977.9576.7579.1382.581.69
Mean monthly sunshine hours9.548.498.778.959.299.9910.3910.7211.010.9210.529.859.87

French Guiana Climate Graph

French Guiana

French Guiana’s Cities by Temperature

French Guiana’s states/regions ranking by average yearly temperature:

Saint-Laurent-du-Maroni
27.51°C | 81.52°F
Cayenne
27.39°C | 81.3°F

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