nomadseason

September Weather in Acajutla, El Salvador

Last updated: August 23, 2025

In September, the average temperature in Acajutla, El Salvador is a balmy 27°C (81°F), with a minimum of 24°C (76°F) and a maximum reaching 31°C (88°F). Expect 284 mm (11.2 in) of precipitation spread over 28 days, contributing to an average humidity level of 77%. It's a season of warmth and moisture, perfect for embracing the local scenery!

September Temperature in Acajutla

In September in Acajutla, the average temperature is 27°C (81°F), with a maximum that can reach 31°C (88°F) and a minimum that can be as low as 24°C (76°F). This mild and pleasant climate makes Acajutla an ideal destination for travelers seeking comfort and warmth during this time of year.

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

The chart illustrates September temperature patterns in Acajutla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Acajutla, September typically has an average temperature of 27°C (81°F), with highs reaching up to 31°C (88°F) and lows dropping to around 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec808182828281828281818181
Data source: Temperature data for Acajutla generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Acajutla

In Acajutla in September, the precipitation amount is 284 mm (11.2 in) during a span of 28 days.

September Precipitation Trends in Acajutla

The chart displays monthly precipitation patterns in Acajutla, 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 Acajutla, September typically receives around 284 mm (11.2 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec541240248291177273284341768
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Acajutla

In Acajutla in September, humidity is 77%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket, making travel feel sticky and heavy, as sweat clings to the skin and the air becomes thick, causing you to long for refreshing breezes and cool shade.

September Average Humidity in Acajutla

This chart illustrates the average monthly humidity levels in Acajutla, 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 Acajutla is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%62%59%59%59%68%78%79%77%77%75%67%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Acajutla

In Acajutla 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 Acajutla.

Maximum UV Index Levels in Acajutla for September

The chart shows the monthly maximum UV Index (UVI) for Acajutla 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 Acajutla typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11121414141413131312109
Data source: Acajutla 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 Acajutla Compares to Other Months

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

This table compares monthly weather conditions in Acajutla, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)5 mm (0.2 inches)63%extreme
February Weather27°C (81°F)4 mm (0.2 inches)62%extreme
March Weather28°C (82°F)12 mm (0.5 inches)59%extreme
April Weather28°C (83°F)40 mm (1.6 inches)59%extreme
May Weather28°C (82°F)248 mm (9.8 inches)59%extreme
June Weather27°C (82°F)291 mm (11.5 inches)68%extreme
July Weather28°C (82°F)176 mm (6.9 inches)77%extreme
August Weather28°C (82°F)273 mm (10.7 inches)79%extreme
September Weather27°C (81°F)284 mm (11.2 inches)77%extreme
October Weather27°C (81°F)341 mm (13.4 inches)77%extreme
November Weather27°C (81°F)76 mm (3.0 inches)75%very high
December Weather27°C (81°F)8 mm (0.3 inches)66%very high

Compare Acajutla's Climate with Cities Worldwide