Cayenne Climate by Month
Cayenne, Guyane, French Guiana
Warm all year, with rain spread through the year.
The climate in Cayenne is warm all year, with rain spread through the year. October is the warmest month, with highs around 90°F (32°C); January is the coolest at 84°F (29°C), and nights dip to 71°F (22°C). It gets 108 in (2747 mm) of rain a year, spread across the months. The air is humid, averaging 84% relative humidity.
- Warmest month
- 90°F(32°C)
- Average high, October
- Coldest nights
- 71°F(22°C)
- Average low, July
- Rain per year
- 108 in(2747 mm)
- No clear rainy season
- Humidity
- 84%
- Sunniest: September
Best and worst months in Cayenne
Best for weatherAugust to October are the best time for weather in Cayenne: highs near 89°F (32°C) and about 1.9 in (48 mm) of rain a month.
Least pleasantMay is the least pleasant month: it's the wettest, with 20 in (498 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Cayenne weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 84°F(29°C) | 73°F(23°C) | 14 in(351 mm) | 84% | 4.2 |
| FebFebruary | 84°F(29°C) | 74°F(23°C) | 9.7 in(247 mm) | 84% | 4.5 |
| MarMarch | 85°F(29°C) | 74°F(23°C) | 9.0 in(229 mm) | 82% | 4.9 |
| AprApril | 85°F(29°C) | 74°F(23°C) | 14 in(352 mm) | 84% | 4.8 |
| MayMay | 85°F(29°C) | 74°F(23°C) | 20 in(498 mm) | 88% | 4.5 |
| JunJune | 85°F(30°C) | 72°F(22°C) | 13 in(339 mm) | 87% | 4.8 |
| JulJuly | 87°F(30°C) | 71°F(22°C) | 7.0 in(177 mm) | 86% | 5.3 |
| AugAugustBest | 88°F(31°C) | 72°F(22°C) | 2.6 in(67 mm) | 83% | 5.9 |
| SepSeptemberBest | 90°F(32°C) | 72°F(22°C) | 1.2 in(31 mm) | 78% | 6.3 |
| OctOctoberBest | 90°F(32°C) | 72°F(22°C) | 1.8 in(46 mm) | 78% | 6.2 |
| NovNovember | 88°F(31°C) | 72°F(22°C) | 4.7 in(120 mm) | 83% | 5.5 |
| DecDecember | 85°F(30°C) | 73°F(23°C) | 11 in(290 mm) | 86% | 4.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
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