Cayenne weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Fair
Best time to visit: January – March, September – October
What is the weather like in Cayenne in January?
In January, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 23 °C. The sea averages 27.0 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 257 mm. The air is often humid and muggy. All in all, January is a so-so month for a holiday in Cayenne.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 49 | 54 | 54 |
| Day | 28° | 28° | 28° |
| Night | 24° | 23° | 24° |
| Sea | 28° | 27° | 27° |
| Sun | 5 h | 5 h | 5 h |
| Rain days | 27 | 26 | 22 |
More details for January
- Daylight
- 11 h 52 min06:42 – 18:34
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 75 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−3America/Cayenne
How the score comes together
- Temperatureweight 50 %92 %
- Sunshineweight 20 %40 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Cayenne in January: quick answers
Is Cayenne hot in January?
Yes. In January, Cayenne is hot: daytime highs average 28 °C and nights stay around 23 °C.
Can you swim in Cayenne in January?
Yes. In January the sea averages 27.0 °C – lovely and warm for swimming.
Does it rain much in Cayenne in January?
It rains often – on about 26 days, adding up to 257 mm.
Cayenne month by month
The whole year in CayenneAll destinations: French GuianaWhere to go in JanuarySea temperature in January
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