What’s the climate like in French Guiana?
The current climate of French Guiana features average monthly temperatures ranging from highs of 34°C during the day to lows of 29°C. The average yearly temperature is around 31°C. At night, temperatures in the colder months average around 23°C and in the warmer months around 24°C.
The highest temperature recorded in French Guiana in recent years was 39°C in October 2023. The lowest daytime temperature recorded was 22°C in January 2023.
On average, French Guiana receives 3072 mm of precipitation each year. For comparison, UK gets 701 mm of precipitation annually.
The climate of French Guiana is based on weather data from Cayenne. Other locations might have different weather. You can check out all destinations in French Guiana for a full picture of the climate.
Best time to visit French Guiana?
The best time to visit French Guiana for pleasant to warm weather is September and October. There might be some rain during this period, but the temperatures are just right for exploring French Guiana.
Climate Table of French Guiana
The climate table of French Guiana shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. max (°C) | 29 | 29 | 30 | 30 | 30 | 31 | 31 | 32 | 33 | 34 | 32 | 31 |
| Temp. min (°C) | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 24 |
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| Precipitation (mm) | 284 | 322 | 290 | 329 | 524 | 295 | 290 | 141 | 78 | 39 | 142 | 338 |
| UV Index | 7 | 7 | 8 | 7 | 7 | 7 | 8 | 9 | 9 | 9 | 8 | 7 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 31°C
- Highest temperature: 34°C in October
- Lowest temperature: 29°C in January and February
- Precipitation: 3072 mm per year, averaging 256 mm per month
- Driest months: 39 mm in October, 78 mm in September and 141 mm in August
- Wettest months: 524 mm in May, 338 mm in December and 329 mm in April
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Weather experiences in French Guiana
Good
From time to time, showers brought long-awaited relief. The ... more
Good
It was warm and sunny, with a little rain. It was very humid... more
Table of Contents
Average Temperature per Month in French Guiana
This graph shows the average maximum temperatures per month in French Guiana. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in French Guiana
This graph shows how much precipitation French Guiana gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in French Guiana
This graph shows the average UV index per month in French Guiana. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in French Guiana
This graph shows the average yearly temperature in French Guiana. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in French Guiana
This chart shows the total yearly precipitation in French Guiana over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences in French Guiana
The weather in French Guiana is rated an average of 3,1 out of 5 stars by 10 visitors. Have you been to French Guiana? Share your weather experience to help other visitors.
Write your own review
From time to time, showers brought long-awaited relief. The average temperature was around 28°C, pleasantly warm.— This text is automatically translated to English
The heat and high humidity were unexpectedly intense. Heavy rain fell almost every day. Not ideal for a trip like this.— This text is automatically translated to English
Some days there were brilliant sunshine and temperatures around 28°C, while others were surprisingly rainy and humid. This did not make the adventure any less entertaining.— This text is automatically translated to English
The sun shines relentlessly and it rains heavily. Not ideal for a holiday.— This text is automatically translated to English
It was warm and sunny, with a little rain. It was very humid at times, but that is normal in this tropical climate.— This text is automatically translated to English
The perfect mix for someone from a cold climate like me. The nights were pleasantly cool. In short, a great experience.— This text is automatically translated to English
Mostly hot and humid with some light rain. Thunderstorms were frequent and the heat could be unbearable, but this is typical of a tropical climate.— This text is automatically translated to English
Although there is intense heat at times, heavy rains also fall. It is therefore advisable to always be prepared for both scenarios.— This text is automatically translated to English
April in French Guiana was quite humid and hot. Despite frequent rain showers, there were also sunny moments. High humidity sometimes caused discomfort, especially during walks in nature.— This text is automatically translated to English
Expect lots of rain; The sky is full of threatening clouds. You might feel the tropical heat. Bring light clothing.— This text is automatically translated to English
Have you been to French Guiana?
Share your weather experiences in French Guiana.
Average Weather in French Guiana by Month
Click on a month below to see detailed weather info for French Guiana. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
