October Weather in Grand-Santi, French Guiana

Last updated: August 23, 2025

In October, the average temperature in Grand-Santi, French Guiana hovers around 28°C (83°F), making it a warm destination for travelers. However, temperatures can range from a comfortable 22°C (72°F) to a sizzling 37°C (99°F). Visitors should expect about 38 mm (1.5 in) of precipitation over 9 days, contributing to an average humidity level of 63%. Whether you're exploring or relaxing, be prepared for the delightful tropical conditions!

October Temperature in Grand-Santi

In October in Grand-Santi, the average temperature is 28°C (83°F). Maximums can reach up to 37°C (99°F), and minimums can drop as low as 22°C (72°F). This warm climate makes Grand-Santi an ideal destination for travelers looking to enjoy sunny days and vibrant outdoor activities.

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

The chart illustrates October 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, October typically has an average temperature of 28°C (83°F), with highs reaching up to 37°C (99°F) and lows dropping to around 22°C (72°F).

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

October Precipitation in Grand-Santi

In Grand-Santi in October, the total precipitation amount is 38 mm (1.5 in) spread over a duration of 9 days.

October Precipitation Trends in Grand-Santi

The chart displays monthly precipitation patterns in Grand-Santi, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Grand-Santi, October typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Grand-Santi

In Grand-Santi in October humidity is 63%. With an average temperature of 28°C (83°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities a bit more strenuous and encouraging you to seek shade and hydration while exploring the sights.

October Average Humidity in Grand-Santi

This chart illustrates the average monthly humidity levels in Grand-Santi, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Grand-Santi is approximately 63%, offering insight into how humid the weather typically is during this month.

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

October UV Index in Grand-Santi

In Grand-Santi in October, 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 October

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

Data source: Grand-Santi October 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 October 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 October’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 October’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