January Weather in Sinnamary, French Guiana

Last updated: August 23, 2025

In Sinnamary, French Guiana, the average temperature in January hovers around 26°C (79°F), providing a warm and inviting atmosphere. Expect minimum temperatures of 24°C (75°F) and a comfortable maximum of 29°C (84°F). However, prepare for some wet days, as precipitation averages 169 mm (6.7 in) over 22 days. With an average humidity of 70%, the climate has a pleasantly tropical feel.

January Temperature in Sinnamary

In January in Sinnamary, the average temperature is 26°C (79°F), with maximums reaching 29°C (84°F) and minimums dipping to 24°C (75°F). This pleasant climate makes it an ideal time to explore the local sights and enjoy outdoor activities.

January Weather in Sinnamary: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sinnamary, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sinnamary, January 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 (75°F).

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

January Precipitation in Sinnamary

In Sinnamary in January, the total precipitation amount is 169 mm (6.7 in) spread over 22 days.

January Precipitation Trends in Sinnamary

The chart displays monthly precipitation patterns in Sinnamary, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Sinnamary, January typically receives around 169 mm (6.7 inches) of precipitation spread over approximately 22 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Sinnamary

In Sinnamary in January, humidity is 70%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures a bit sticky but also invigorating, requiring frequent breaks to hydrate and cool off.

January Average Humidity in Sinnamary

This chart illustrates the average monthly humidity levels in Sinnamary, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Sinnamary is approximately 70%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Sinnamary

In Sinnamary in January, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Sinnamary.

Maximum UV Index Levels in Sinnamary for January

The chart shows the monthly maximum UV Index (UVI) for Sinnamary in January, 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 January, the maximum UV index in Sinnamary typically reaches 13, which falls under the extreme exposure category.

Data source: Sinnamary January 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 January Weather in Sinnamary Compares to Other Months

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

This table compares monthly weather conditions in Sinnamary, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	169 mm (6.7 inches)	70%	extreme
February Weather	26°C (79°F)	135 mm (5.3 inches)	66%	extreme
March Weather	26°C (79°F)	153 mm (6.0 inches)	66%	extreme
April Weather	26°C (80°F)	334 mm (13.2 inches)	66%	extreme
May Weather	26°C (80°F)	475 mm (18.7 inches)	68%	extreme
June Weather	26°C (80°F)	423 mm (16.6 inches)	86%	extreme
July Weather	26°C (80°F)	242 mm (9.5 inches)	76%	extreme
August Weather	27°C (81°F)	103 mm (4.1 inches)	65%	extreme
September Weather	27°C (82°F)	68 mm (2.7 inches)	62%	extreme
October Weather	27°C (82°F)	70 mm (2.8 inches)	63%	extreme
November Weather	27°C (81°F)	202 mm (8.0 inches)	74%	extreme
December Weather	26°C (79°F)	294 mm (11.6 inches)	79%	extreme