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Very few tourists make it to this small South American country. It's a shame, because nature in French Guiana is still pure and unspoiled.
Cayenne Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cayenne.
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Climate overview of Cayenne
Cayenne, French Guiana, enjoys a steady climate throughout the year, with daytime temperatures typically around 30°C (86°F). October is the warmest month at 32°C (90°F), while January is the coolest at 29°C (84°F).
The city receives considerable rainfall, with around 2591 mm (102 in) annually. May is the wettest month. It has a distinct rainy season from December to July. The most sunshine falls in September, with an average of 8.5 hours of daily sunshine.
Cayenne Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cayenne - and find the best time to visit.
Monthly Temperature in Cayenne
The temperature in Cayenne remains steady throughout the year, providing a consistently very warm climate. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in October to a comfortable 29°C (84°F) in the coolest month, January.
Nights vary from 25°C (77°F) in October to around 24°C (75°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cayenne
Cayenne has a relatively rainy climate with high precipitation levels, averaging 2591 mm (102 in) of rainfall annually. The climate in Cayenne shows significant variation throughout the year. Expect heavy rainfall in May, the wettest month, with an average of 412 mm (16 in) of precipitation over 26 rainy days.
In contrast, the driest month September offers drier and sunnier days, with around 50 mm (2 in) of rainfall over 4 rainy days. For more details, please visit our Cayenne Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Cayenne
For those who appreciate different seasons, Cayenne serves as an ideal destination. Expect longer, more sun-filled days in September with an average of 8.5 hours of sunshine daily, and embrace the darker days in February, offering only 3.0 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Cayenne
The most favourable weather available in Cayenne usually occurs in March, September and October. Conditions are generally most challenging in April, May, June, July and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
mixed
Feb
mixed
Mar
good
Apr
very wet
May
very wet
Jun
very wet
Jul
very wet
Aug
mixed
Sep
good
Oct
good
Nov
mixed
Dec
very wet
- Best overall: March, September and October
- Warmest weather: August, September, October and November
- Most sunshine: September and October
- Fewest rainy days: September and October
- Wettest months: April, May, June and July, when rainfall is highest.
- Seasonal pattern: A distinct rainy season from December to July
Frequently asked questions about the climate in Cayenne
What is the best time to visit Cayenne?
March, September and October typically offer the most optimal weather in Cayenne. In contrast, April, May, June, July and December tend to have less optimal conditions. Cayenne has a distinct rainy season from December to July.
What temperatures can I expect in Cayenne?
Daytime highs range from 29°C (84°F) in January to 32°C (90°F) in October. Nighttime lows range from 24°C (75°F) to 25°C (77°F). Temperatures stay relatively stable year-round.
How much rain does Cayenne get?
Annual rainfall is around 2591 mm (102 in). May is the wettest month with 412 mm (16 in), while September is the driest with 50 mm (2 in).
How sunny is Cayenne?
Cayenne receives around 1,980 hours of sunshine per year. September is the sunniest month with 255 hours, while February is the cloudiest with just 89 hours.
Cayenne 3-Day Forecast
Cayenne on the map
Cayenne is highlighted - select any city to see its climate.
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