July Weather in Sinnamary, French Guiana

Last updated: August 23, 2025

In July, the average temperature in Sinnamary, French Guiana hovers around 26°C (80°F), with a minimum of 23°C (74°F) and a maximum reaching 30°C (86°F). Expect high humidity levels at 76%, along with an average precipitation amount of 242 mm (9.5 in) spread over 29 days.

July Temperature in Sinnamary

In July in Sinnamary, the average temperature is 26°C (80°F). Maximums can reach 30°C (86°F), while minimums can drop to as low as 23°C (74°F). This mild climate makes Sinnamary an ideal destination for travelers seeking comfortable weather.

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

The chart illustrates July 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, July typically has an average temperature of 26°C (80°F), with highs reaching up to 30°C (86°F) and lows dropping to around 23°C (74°F).

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

July Precipitation in Sinnamary

In Sinnamary in July, the total precipitation amount is 242 mm (9.5 in), occurring over the course of 29 days.

July Precipitation Trends in Sinnamary

The chart displays monthly precipitation patterns in Sinnamary, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Sinnamary, July typically receives around 242 mm (9.5 inches) of precipitation spread over approximately 29 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Sinnamary

In Sinnamary in July humidity is 76%. With an average temperature of 26°C (80°F), this humidity feels like a heavy blanket enveloping you, making travel feel stifling and exhausting as you navigate the sticky air and sweat-drenched clothes.

July Average Humidity in Sinnamary

This chart illustrates the average monthly humidity levels in Sinnamary, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Sinnamary is approximately 76%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Sinnamary

In Sinnamary in July, 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 Sinnamary.

Maximum UV Index Levels in Sinnamary for July

The chart shows the monthly maximum UV Index (UVI) for Sinnamary in July, 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 July, the maximum UV index in Sinnamary typically reaches 12, which falls under the extreme exposure category.

Data source: Sinnamary July 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 July 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 July’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 July’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