December Weather in Mana, French Guiana

Last updated: August 23, 2025

In December, the average temperature in Mana, French Guiana reaches a comfortable 26°C (79°F), with a minimum of 24°C (76°F) and a maximum of 29°C (84°F). However, prepare for some rain, as you'll experience an average precipitation of 268 mm (10.6 in) over 30 days, coupled with a humidity level of 79%. Stay cool and dry!

December Temperature in Mana

In December in Mana, the average temperature is 26°C (79°F), with maximums reaching 29°C (84°F) and minimums dropping to around 24°C (76°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

December Weather in Mana: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Mana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mana, December typically has an average temperature of 26°C (79°F), with highs reaching up to 29°C (84°F) and lows dropping to around 24°C (76°F).

Data source: Temperature data for Mana generated using information from the Copernicus Climate Change Service.

December Precipitation in Mana

In Mana in December, the precipitation amount is 268 mm (10.6 in) over a span of 30 days.

December Precipitation Trends in Mana

The chart displays monthly precipitation patterns in Mana, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Mana, December typically receives around 268 mm (10.6 inches) of precipitation spread over approximately 30 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Mana

In Mana in December humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

December Average Humidity in Mana

This chart illustrates the average monthly humidity levels in Mana, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Mana is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mana

In Mana in December, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Mana.

Maximum UV Index Levels in Mana for December

The chart shows the monthly maximum UV Index (UVI) for Mana in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Mana typically reaches 11, which falls under the extreme exposure category.

Data source: Mana December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How December Weather in Mana Compares to Other Months

Weather in Mana varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mana, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Mana, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	170 mm (6.7 inches)	70%	extreme
February Weather	26°C (79°F)	125 mm (4.9 inches)	66%	extreme
March Weather	26°C (79°F)	154 mm (6.1 inches)	66%	extreme
April Weather	26°C (80°F)	348 mm (13.7 inches)	66%	extreme
May Weather	26°C (79°F)	417 mm (16.4 inches)	68%	extreme
June Weather	26°C (79°F)	384 mm (15.1 inches)	86%	extreme
July Weather	26°C (80°F)	231 mm (9.1 inches)	76%	extreme
August Weather	27°C (81°F)	86 mm (3.4 inches)	65%	extreme
September Weather	27°C (81°F)	52 mm (2.0 inches)	62%	extreme
October Weather	27°C (82°F)	61 mm (2.4 inches)	63%	extreme
November Weather	27°C (81°F)	172 mm (6.8 inches)	74%	extreme
December Weather	26°C (79°F)	268 mm (10.6 inches)	79%	extreme