Common information

Capital
Cayenne
Language
French
Currency
Euro
Population
250 109
Phone code
+ 594

List of largest cities in French Guiana

Weather, climate, temperature by months in French Guiana

Season Autumn Winter Spring Summer
Month Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Year
Record high, °C 41 38 38 33 35 32 34 32 38 36 39 39 41
Average high, °C 31 31 30 29 28 28 29 29 29 29 29 30 29
Average temperature, °C 27 27 26 26 26 26 26 26 26 26 26 26 26
Average low, °C 22 23 22 23 23 23 23 23 23 23 22 23 23
Record low, °C 19 19 19 20 20 18 17 20 20 21 18 20 17
Fog, days 6 7 7 4 1 1 1 1 3 7 7 6 51
Thunderstorms, days 5 4 3 1 1 0 0 1 2 3 5 6 30
Average precipitation, mm. 65 72 132 284 343 255 309 339 486 386 221 130 3022
Relative humidity morning, % 98 98 98 97 95 93 94 95 97 98 98 97 97
Relative humidity evening, % 65 66 69 76 76 74 74 75 78 78 73 69 73
Wind speed, km/h 12 12 12 12 13 14 14 13 10 10 10 12 12
Day Length, часов 13 12 12 12 12 12 12 13 13 13 13 13 12
Dew point, °C 22 23 23 23 22 22 22 23 23 23 23 23 272
Growing degree-day, °C 506 521 491 492 483 446 496 485 500 476 494 510 5898
Solar radiation, global, Mj/m2 24 23 21 19 18 20 21 20 18 18 21 23 21