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Temperatures 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.

Max and Min Temperatures per Day

Daily Temperature in December in French Guiana

This chart shows the daily maximum and minimum temperatures in degrees Celsius for French Guiana in December. The red line indicates the max temperatures, and the blue line shows the minimums.

Start of December

The month of December starts in French Guiana with hot temperatures, averaging around 31°C during the day and nights close to 24°C. Plenty of days with a chance of precipitation. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.

Mid-December

By mid-December, the average daytime temperature stays the same at 31°C, with nights close to 24°C. The chance of precipitation is high during this period. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.

End of December

By the end of December, the average daytime temperature in French Guiana will be around 30°C, with nights close to 24°C. There’s a significant chance of many days with precipitation. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.

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Precipitation in December

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.

There’s an average 77% chance of precipitation per day this month. Though that seems frequent, there are also a few days with lower precipitation chances.

Precipitation Chance

Daily precipitation chance in percentages for French Guiana in December

This chart shows the daily precipitation chance (in percentages) in December for French Guiana. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.

French Guiana in December

UK
Temperature Average Temperature
31°C 9°C
Sun High Temp
31°C 11°C
Sun Low Temp
29°C 8°C
Rain Total Precipitation
338 mm 67 mm
Rain Rainy Days
24 days 10 days

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?

After some sun? Then December isn’t the best time to be in French Guiana. The temperature is pleasant, but there’s too much chance of rain this month.

Temperature records for French Guiana in December

With 36°C, French Guiana hit the highest temperature in the last 10 years in December 2023. The lowest daytime temperature in this month was 24°C in 2021. The extreme night temperatures ranged from a low of 20°C to a high of 26°C.

Check out the climate of French Guiana for all months and discover the best travel time

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.

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Daily Temperature in December in French Guiana

This chart shows the average daily temperatures, both day and night, for each day in December in French Guiana, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.

Daily Temperature in December in French Guiana

Daily Precipitation in December in French Guiana

The chart below shows the average daily precipitation in December for French Guiana, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for December, you can expect around 24 days of rain in French Guiana.

Daily Precipitation in December 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.

Daily UV Index in December in French Guiana

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 years.

Temperature in December in French Guiana Over the Years

Total Precipitation in December in French Guiana Over the Years

This chart shows the average precipitation in December in French Guiana, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.

Precipitation in December in French Guiana Over the Years

Daily climate in December for French Guiana

Click on a specific day in December for detailed info on the typical 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?

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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

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