Cayenne weather in December
December in Cayenne: warm, soaked, with clean air — a gamble, with 28 rainy days.
#10 of 12 months in Cayenne · #669 of 897 destinations to visit in December · comfort 57/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cayenne in December
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Cayenne climate normals — December
| Daytime high | 28°C / 83°F | 🌤 warm |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Rainfall | 314 mm / 12.4 in | ⛈ soaked |
| Rainy days | 28 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 8.8 h/day | |
| Daylight | 11.8 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 34 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cayenne in December — FAQ
- Is December a good time to visit Cayenne?
- December in Cayenne: warm, soaked, with clean air — a gamble, with 28 rainy days. It ranks #10 of 12 months for Cayenne on SeasonMap's comfort score (57/100).
- What is the weather like in Cayenne in December?
- In December, Cayenne averages a daily high of 28.3°C and a low of 23.7°C, with about 314.4 mm of rain over roughly 28 rainy days.
- What is the air quality in Cayenne in December?
- Cayenne has a mean US Air Quality Index of about 34 in December.