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December Weather in Roura, French Guiana

Last updated: August 23, 2025

In December, the average temperature in Roura, French Guiana hovers around 26°C (79°F). Expect a minimum of 22°C (72°F) and a peak at 31°C (89°F), making it a warm time of year. However, be prepared for 367 mm (14.4 in) of precipitation spread over 29 days, contributing to an average humidity of 84%.

December Temperature in Roura

In December in Roura, the average temperature is 26°C (79°F). Maximums can reach 31°C (89°F), while minimums can drop to as low as 22°C (72°F). This pleasant climate makes Roura an ideal destination for travelers seeking warmth and comfort.

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

The chart illustrates December temperature patterns in Roura, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roura, December typically has an average temperature of 26°C (79°F), with highs reaching up to 31°C (89°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec787879797979798081818078
Data source: Temperature data for Roura generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Roura

In Roura in December, the total precipitation amount is 367 mm (14.4 in) spread over the course of 29 days.

December Precipitation Trends in Roura

The chart displays monthly precipitation patterns in Roura, 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 Roura, December typically receives around 367 mm (14.4 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec2292041903845764433271439599239367
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Roura

In Roura in December, humidity is 84%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel sticky and exhausting, yet the vibrant atmosphere and lush surroundings offer a refreshing allure that invites exploration.

December Average Humidity in Roura

This chart illustrates the average monthly humidity levels in Roura, 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 Roura is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%76%77%77%78%87%81%80%79%80%85%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Roura

In Roura in December, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Roura.

Maximum UV Index Levels in Roura for December

The chart shows the monthly maximum UV Index (UVI) for Roura 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 Roura typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131416161413121313131312
Data source: Roura 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 Roura Compares to Other Months

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

This table compares monthly weather conditions in Roura, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)229 mm (9.0 inches)78%extreme
February Weather26°C (78°F)204 mm (8.0 inches)76%extreme
March Weather26°C (79°F)190 mm (7.5 inches)76%extreme
April Weather26°C (79°F)384 mm (15.1 inches)77%extreme
May Weather26°C (79°F)576 mm (22.7 inches)78%extreme
June Weather26°C (79°F)443 mm (17.5 inches)87%extreme
July Weather26°C (79°F)327 mm (12.9 inches)81%extreme
August Weather27°C (80°F)143 mm (5.6 inches)80%extreme
September Weather27°C (82°F)95 mm (3.7 inches)79%extreme
October Weather27°C (81°F)99 mm (3.9 inches)80%extreme
November Weather27°C (80°F)239 mm (9.4 inches)85%extreme
December Weather26°C (79°F)367 mm (14.4 inches)84%extreme

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