September Weather in Ascension, Bolivia

Last updated: August 22, 2025

In September, the average temperature in Ascension, Bolivia is a warm 27°C (80°F). During this time, temperatures can dip to a minimum of 11°C (53°F) and soar to a maximum of 38°C (100°F). Visitors can expect 30 mm (1.2 in) of precipitation spread over 5 days, with average humidity at a comfortable 33%.

September Temperature in Ascension

In September in Ascension, the average temperature is 27°C (80°F). Maximums can reach 38°C (100°F), while minimums can drop as low as 11°C (53°F). Be prepared for warm days and cooler nights when traveling during this time.

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

The chart illustrates September temperature patterns in Ascension, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ascension, September typically has an average temperature of 27°C (80°F), with highs reaching up to 38°C (100°F) and lows dropping to around 11°C (53°F).

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

September Precipitation in Ascension

In Ascension in September, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.

September Precipitation Trends in Ascension

The chart displays monthly precipitation patterns in Ascension, 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 Ascension, September typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 5 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 Ascension

In Ascension in September humidity is 33%. With average temperature 27°C (80°F), this humidity feels like a comfortable embrace, making it quite pleasant for traveling and exploring the area without the worry of excessive sweat or discomfort.

September Average Humidity in Ascension

This chart illustrates the average monthly humidity levels in Ascension, 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 Ascension is approximately 33%, 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 Ascension

In Ascension in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Ascension.

Maximum UV Index Levels in Ascension for September

The chart shows the monthly maximum UV Index (UVI) for Ascension 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 Ascension typically reaches 11, which falls under the extreme exposure category.

Data source: Ascension 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 Ascension Compares to Other Months

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

This table compares monthly weather conditions in Ascension, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	184 mm (7.2 inches)	87%	extreme
February Weather	26°C (79°F)	218 mm (8.6 inches)	86%	extreme
March Weather	26°C (78°F)	181 mm (7.1 inches)	87%	extreme
April Weather	25°C (77°F)	117 mm (4.6 inches)	87%	extreme
May Weather	23°C (74°F)	60 mm (2.4 inches)	81%	very high
June Weather	22°C (71°F)	38 mm (1.5 inches)	64%	very high
July Weather	22°C (72°F)	6 mm (0.2 inches)	47%	very high
August Weather	24°C (75°F)	27 mm (1.0 inches)	39%	very high
September Weather	27°C (80°F)	30 mm (1.2 inches)	33%	extreme
October Weather	27°C (81°F)	98 mm (3.9 inches)	35%	extreme
November Weather	26°C (80°F)	194 mm (7.6 inches)	65%	extreme
December Weather	26°C (79°F)	250 mm (9.9 inches)	84%	extreme