ClimateForecastDecemberJanuary >>

Cayenne Climate by Month

Cayenne has a steady very warm climate throughout the year. It also experiences much rainfall throughout the year. Now, let’s explore all the climate details to give you a full picture.

Average day and night temperature

With minimal seasonal shifts, Cayenne experiences a constant climate year-round. Average daytime temperatures reach a very warm 33°C in October. In July, the coolest month of the year, temperatures drop to a comfortable 29°C. At night, expect cooler temperatures, averaging 23°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Cayenne has a notably wet climate with abundant precipitation, recording 2663 mm of rainfall per year. Cayenne can be quite wet during May, receiving approximately 403 mm of precipitation over 26 rainy days.

In contrast September, experiences much drier conditions, with 65 mm of rainfall, spread across 5 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Cayenne can be enjoyed more throughout the sunniest month of October under a blue sky, with approximately 8.5 hours of sunshine daily. In contrast, the city experiences much darker days in February, with only 3.1 hours of sunlight per day.

Monthly hours of sunshine

Daily hours of sunshine

Average water temperature

The mean water temperature over the year in Cayenne ranges from 27°C in January to 28°C in March.

Water temperature over the year

The best time of year to visit Cayenne in French Guiana

Cayenne has high temperatures year round ranging between 29°C and 32°C.
Other facts from our historical weather data:
  • Which is the hottest month in Cayenne?
    October has an average maximum temperature of 33°C and is the hottest month of the year.
  • Which is the coolest month in Cayenne?
    The coolest month is July with an average maximum temperature of 29°C.
  • Which is the wettest month in Cayenne?
    May tops the wettest month list with 403 mm of rainfall.
  • Which is the driest month in Cayenne?
    September is the driest month with 65 mm of precipitation.
  • Which is the sunniest month in Cayenne?
    October is the sunniest month with an average of 256 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Cayenne

    Sat   Dec 14
    31°C | 24°C
    NE 25 km/h
    0.8 mm
    broken clouds and  chance of rain

    broken clouds and chance of rain

    Sun   Dec 15
    31°C | 24°C
    NE 25 km/h
    4.5 mm
    broken clouds and  chance of rain

    broken clouds and chance of rain

    Mon   Dec 16
    31°C | 25°C
    E 25 km/h
    19 mm
    broken clouds and thunder

    broken clouds and thunder