Average weather for French Guiana in December
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.
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. There are plenty of days with a good chance of precipitation. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
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. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
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. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In December, there is an average of 338 mm of precipitation, spread over 24 days. The wind speed is around 4 Bft, mostly coming from the East.
French Guiana in December |
New York | ||
|---|---|---|---|
 Average temperature |
31°C | 9°C | |
 Max. temperature |
31°C | 12°C | |
| Min. temperature |
29°C | -5°C | |
 Total precipitation |
338 mm | 133 mm | |
| Rainy days |
24 days | 17 days | |
November
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.
Is December a good time to visit French Guiana?
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.
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.
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.
Daily Temperature in December in French Guiana
This chart shows the average daily high and low temperatures in December for French Guiana, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in French Guiana
The chart below shows the average daily precipitation in December for French Guiana, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 24 days of precipitation in French Guiana.
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.
Temperature in December in French Guiana over the years
This chart shows the average temperature in December in French Guiana, measured in degrees Celsius, over the past few years.
Total precipitation in December in French Guiana over the years
This chart shows the average precipitation in December in French Guiana, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
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.
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.
Or check out the climate of French Guiana for all months at once
