September Weather in Ascension, Mexico

Last updated: August 27, 2025

In September, the average temperature in Ascension, Mexico is a pleasant 24°C (76°F). While you can expect a minimum of 12°C (54°F), the mercury can rise to a sizzling 36°C (97°F). Be prepared for some rain, as 32 mm (1.3 in) of precipitation can occur over 6 days. With an average humidity of 74%, it's a month that embraces both warmth and a touch of moisture.

September Temperature in Ascension

In September in Ascension, the average temperature is 24°C (76°F). The maximum can reach 36°C (97°F), and the minimum can be as low as 12°C (54°F). This makes it an ideal time for travelers to enjoy a comfortable climate while exploring the attractions.

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 24°C (76°F), with highs reaching up to 36°C (97°F) and lows dropping to around 12°C (54°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 total precipitation amount is 32 mm (1.3 in) over the course of 6 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 32 mm (1.3 inches) of precipitation spread over approximately 6 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 74%. With an average temperature of 24°C (76°F), this humidity feels like a warm, heavy blanket wrapping around you, making travel a bit sticky and requiring plenty of hydration as you explore.

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 74%, 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	8°C (48°F)	15 mm (0.6 inches)	79%	moderate
February Weather	11°C (52°F)	13 mm (0.5 inches)	76%	very high
March Weather	15°C (60°F)	12 mm (0.5 inches)	66%	very high
April Weather	20°C (69°F)	4 mm (0.1 inches)	51%	extreme
May Weather	24°C (76°F)	6 mm (0.2 inches)	42%	extreme
June Weather	29°C (84°F)	12 mm (0.5 inches)	37%	extreme
July Weather	27°C (81°F)	72 mm (2.8 inches)	51%	extreme
August Weather	27°C (80°F)	39 mm (1.5 inches)	64%	extreme
September Weather	24°C (76°F)	32 mm (1.3 inches)	74%	extreme
October Weather	20°C (68°F)	17 mm (0.7 inches)	71%	very high
November Weather	14°C (58°F)	13 mm (0.5 inches)	78%	high
December Weather	9°C (48°F)	23 mm (0.9 inches)	85%	moderate