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Rainfall/ Precipitation in Cayenne, French Guiana

  • Cayenne gets an average of 3744 mm (147.4 in) of rainfall per year, or 312 mm (12.3 in) per month.
  • On average there are 212 days per year with more than 0.1 mm (0.004 in) of rainfall (precipitation) or 17.7 days with a quantity of rain, sleet, snow etc. per month.
  • The driest weather is in September when an average of 32 mm (1.3 in) of rainfall (precipitation) occurs.
  • The wettest weather is in May when an average of 590 mm (23.2 in) of rainfall (precipitation) occurs.

Precipitation Table

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
rainfall iconAverage Precipitation mm (in) 431 (16.97) 423 (16.7) 432 (17) 480 (18.9) 590 (23.2) 457 (18) 274 (10.8) 144 (5.7) 32 (1.3) 42 (1.7) 122 (4.8) 317 (12.5) 3744 (147.4)
rainwater catchment iconPrecipitation Litres/m² (Gallons/ft²) 431 (10.57) 423 (10.38) 432 (10.6) 480 (11.77) 590 (14.47) 457 (11.21) 274 (6.72) 144 (3.53) 32 (0.78) 42 (1.03) 122 (2.99) 317 (7.78) 3744 (91.83)
rain days iconNumber of Wet Days (probability of rain on a day) 23 (74%) 20 (71%) 21 (68%) 19 (63%) 25 (81%) 26 (87%) 21 (68%) 14 (45%) 6 (20%) 5 (16%) 11 (37%) 21 (68%)   212 (58%)
sunny or cloudy iconPercentage of Sunny (Cloudy) Daylight Hours 39 (61) 31 (69) 37 (63) 35 (65) 36 (64) 45 (55) 55 (45) 62 (38) 70 (30) 72 (28) 64 (36) 53 (47)   51 (49)





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Precipitation Nearby Cayenne, French Guiana

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