September Weather in Riaba, Equatorial Guinea

Last updated: August 23, 2025

In September, the average temperature in Riaba, Equatorial Guinea is a pleasant 23°C (74°F), with lows of 21°C (70°F) and highs reaching 29°C (85°F). Expect 717 mm (28.2 in) of precipitation spread across 30 days, contributing to an average humidity of 87%. Enjoy the warm, humid climate while staying prepared for the occasional rain!

September Temperature in Riaba

In September in Riaba, the average temperature is 23°C (74°F), with maximums reaching 29°C (85°F) and minimums dipping as low as 21°C (70°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

September Weather in Riaba: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Riaba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riaba, September typically has an average temperature of 23°C (74°F), with highs reaching up to 29°C (85°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in Riaba

In Riaba in September, the total precipitation amount is 717 mm (28.2 in) over a span of 30 days.

September Precipitation Trends in Riaba

The chart displays monthly precipitation patterns in Riaba, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Riaba, September typically receives around 717 mm (28.2 inches) of precipitation spread over approximately 30 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Riaba

In Riaba in September, humidity is 87%. With an average temperature of 23°C (74°F), this humidity feels like a warm, sticky embrace that can quickly wear you down while traveling, making even short walks feel exhausting and necessitating frequent breaks for hydration and cool air.

September Average Humidity in Riaba

This chart illustrates the average monthly humidity levels in Riaba, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Riaba is approximately 87%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Riaba

In Riaba in September, 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 Riaba.

Maximum UV Index Levels in Riaba for September

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

Data source: Riaba September 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 September Weather in Riaba Compares to Other Months

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

This table compares monthly weather conditions in Riaba, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	101 mm (4.0 inches)	76%	extreme
February Weather	25°C (78°F)	164 mm (6.4 inches)	76%	extreme
March Weather	25°C (78°F)	339 mm (13.3 inches)	74%	extreme
April Weather	25°C (78°F)	351 mm (13.8 inches)	74%	extreme
May Weather	25°C (77°F)	526 mm (20.7 inches)	77%	extreme
June Weather	24°C (75°F)	569 mm (22.4 inches)	77%	extreme
July Weather	23°C (74°F)	646 mm (25.4 inches)	79%	extreme
August Weather	23°C (73°F)	781 mm (30.7 inches)	84%	extreme
September Weather	23°C (74°F)	717 mm (28.2 inches)	87%	extreme
October Weather	24°C (75°F)	567 mm (22.3 inches)	86%	extreme
November Weather	24°C (76°F)	347 mm (13.7 inches)	82%	extreme
December Weather	25°C (77°F)	160 mm (6.3 inches)	76%	very high