Cayenne weather in January 2025

Expect 29°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Cayenne in January. Check more long-term weather averages for Cayenne in January before you book your next holiday to French Guiana in 2025/2026.

  • 29°C maximum daytime temperature in January in Cayenne29
    29°C max day temperature
  • 4 hours of sunshine per day
  • 20 days with some rainfall in January in Cayenne20
    20 days with some rainfall
  • 23°C minimum night-time temperature in January in Cayenne23
    23°C min night temperature
  • 12 hours of daylight per day in January in Cayenne12
    12 hours of daylight per day
  • High heat & humidity in January in CayenneH
    High heat & humidity
  • 367 mm monthly rainfall in January in Cayenne367
    367 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Cayenne11
    11+ (Extreme) UV index
  • 27°C sea temperature in January in Cayenne27
    27°C sea temperature

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The January weather guide for French Guiana, represented by Cayenne, (Cayenne) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Cayenne in January?

Daytime temperatures usually reach 29°C in Cayenne in January with high heat and humidity, falling to 23°C at night.

How sunny is it in Cayenne in January?

There are normally 4 hours of bright sunshine each day in Cayenne in January - that's 34% of daylight hours.

How warm is the sea around Cayenne in January?

The average sea temperature around Cayenne in January is 27°C.

Does it rain in Cayenne in January?

There are usually 20 days with some rain in Cayenne in January and the average monthly rainfall is 367mm.

Cayenne January sunrise & sunset times

Browse the sunrise and sunset times for Cayenne in January 2025. Select a month to view Cayenne sunrise and sunset times for the next 12 months.


Date Sunrise times Sunset times
Wednesday, 1st January 2025 06:38 18:28
Thursday, 16th January 2025 06:43 18:35
Friday, 31st January 2025 06:45 18:40

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