October Weather in Sinnamary, French Guiana

Last updated: August 23, 2025

In October, the average temperature in Sinnamary, French Guiana reaches a pleasant 27°C (82°F), perfect for outdoor activities. Expect a minimum of 25°C (77°F) and a maximum soaring to 30°C (86°F). However, be prepared for some rain, as the area receives about 70 mm (2.8 in) of precipitation over 18 days. Humidity hovers around 63%, adding a touch of warmth to the atmosphere.

October Temperature in Sinnamary

In October in Sinnamary, the average temperature is 27°C (82°F). Maximums can reach 30°C (86°F), while minimums can drop to as low as 25°C (77°F). Overall, it's a warm and pleasant destination for travel, perfect for enjoying outdoor activities.

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

The chart illustrates October 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, October typically has an average temperature of 27°C (82°F), with highs reaching up to 30°C (86°F) and lows dropping to around 25°C (77°F).

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

October Precipitation in Sinnamary

In Sinnamary in October, the precipitation amount is 70 mm (2.8 in) over the course of 18 days.

October Precipitation Trends in Sinnamary

The chart displays monthly precipitation patterns in Sinnamary, 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 Sinnamary, October typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 18 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Sinnamary

In Sinnamary in October, humidity is 63%. With an average temperature of 27°C (82°F), this humidity feels like a warm embrace that can make outdoor activities a bit sticky, so travelers will want to stay hydrated and take breaks in the shade.

October Average Humidity in Sinnamary

This chart illustrates the average monthly humidity levels in Sinnamary, 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 Sinnamary 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 Sinnamary

In Sinnamary 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 Sinnamary.

Maximum UV Index Levels in Sinnamary for October

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

Data source: Sinnamary 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 Sinnamary Compares to Other Months

Weather in Sinnamary varies notably across the year, with each month offering distinct climate conditions. This page compares October’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 October’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