The weather in December in French Guiana
It's hot in December in French Guiana with an average temperature of 31°C. Temperatures this month range from a low of 29°C to a high of 31°C. At night, you can expect temperatures between 23°C and 24°C.
Looking for sun? December isn’t a good month to be in French Guiana. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for French Guiana. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 36°C in 2023, French Guiana reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 24°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 20°C to a highest value of 26°C.
Rainfall amount
In December, there is an average of 338 mm of precipitation, spread over 28 days. The wind speed is around 4 Bft, mostly coming from the East.
Daily weather in December for French Guiana
Click on any day in December to get detailed info about the usual weather on that day in French Guiana. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| French Guiana | New York | |
|---|---|---|
| Average temperature | 31°C | 9°C |
| Max. temperature | 31°C | 12°C |
| Min. temperature | 23°C | -5°C |
| Total precipitation | 338 mm | 133 mm |
| Rainy days | 28 days | 17 days |
Start of December
The month of December starts in French Guiana with hot temps, averaging around 31°C during the day and nights around 24°C.
Mid December
By mid-December, daytime temps stay steady at around 31°C, with nights around 24°C. There’s a high chance of precipitation during this time.
End of December
By the end of December, the average daytime temperature in French Guiana is around 30°C, while nighttime temps are about 24°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of French Guiana for all months and discover the best travel time
The climate in French Guiana is based on weather data from Cayenne. Other spots might have different weather. You can check out all destinations in French Guiana to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in December in French Guiana. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in French Guiana
Temperature in December in French Guiana over the years
Precipitation charts
These charts show the average amount of precipitation in December in French Guiana. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in French Guiana
Total precipitation in December in French Guiana over the years
Daily UV index in December in French Guiana
This chart shows the average daily UV index in December in French Guiana, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in French Guiana
Have you been to French Guiana in December?
Share your weather experience in December 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.