French Guiana in December: where is it warmest?
In December, Cayenne averages 28 °C by day.
All destinations in December, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Cayenne | 49 | 28° | 28° | 5 h | 27 |
French Guiana in December: quick answers
French Guiana in December: where is it warmest?
The warmest places in December are Cayenne (28 °C).
French Guiana in December: where is the sea warmest?
The sea is warmest at Cayenne (28 °C).
French Guiana in December: where is the weather best?
The best holiday weather in December – warm, sunny and dry – is in Cayenne.
French Guiana month by month
French Guiana: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences