January Weather in Grand-Santi, French Guiana

Last updated: August 23, 2025

In January, the average temperature in Grand-Santi, French Guiana hovers around 25°C (78°F), offering a delightful climate. Temperatures can dip to a comfortable 20°C (68°F) and peak at a warm 33°C (91°F). Expect 137 mm (5.4 in) of precipitation spread over 19 days, contributing to the region's 70% average humidity. Enjoy the blend of warmth and occasional showers during your visit!

January Temperature in Grand-Santi

In January in Grand-Santi, the average temperature is 25°C (78°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as 20°C (68°F). This pleasant climate makes it an ideal time for outdoor activities and exploring the local attractions.

January Weather in Grand-Santi: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Grand-Santi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand-Santi, January typically has an average temperature of 25°C (78°F), with highs reaching up to 33°C (91°F) and lows dropping to around 20°C (68°F).

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

January Precipitation in Grand-Santi

In Grand-Santi in January, the total precipitation amount is 137 mm (5.4 in), distributed over 19 days.

January Precipitation Trends in Grand-Santi

The chart displays monthly precipitation patterns in Grand-Santi, 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 Grand-Santi, January typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 19 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Grand-Santi

In Grand-Santi in January humidity is 70%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, making traveling feel both sultry and invigorating as the air wraps around you, encouraging slower-paced exploration amidst the vibrant surroundings.

January Average Humidity in Grand-Santi

This chart illustrates the average monthly humidity levels in Grand-Santi, 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 Grand-Santi 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 Grand-Santi

In Grand-Santi 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 Grand-Santi.

Maximum UV Index Levels in Grand-Santi for January

The chart shows the monthly maximum UV Index (UVI) for Grand-Santi 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 Grand-Santi typically reaches 13, which falls under the extreme exposure category.

Data source: Grand-Santi 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 Grand-Santi Compares to Other Months

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

This table compares monthly weather conditions in Grand-Santi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	137 mm (5.4 inches)	70%	extreme
February Weather	25°C (78°F)	105 mm (4.1 inches)	66%	extreme
March Weather	26°C (79°F)	129 mm (5.1 inches)	66%	extreme
April Weather	26°C (78°F)	290 mm (11.4 inches)	66%	extreme
May Weather	25°C (78°F)	461 mm (18.2 inches)	68%	extreme
June Weather	26°C (78°F)	317 mm (12.5 inches)	86%	extreme
July Weather	26°C (79°F)	248 mm (9.8 inches)	76%	extreme
August Weather	27°C (80°F)	115 mm (4.5 inches)	65%	extreme
September Weather	28°C (82°F)	76 mm (3.0 inches)	62%	extreme
October Weather	28°C (83°F)	38 mm (1.5 inches)	63%	extreme
November Weather	27°C (81°F)	108 mm (4.3 inches)	74%	extreme
December Weather	26°C (78°F)	213 mm (8.4 inches)	79%	extreme