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October Weather in San Alejo, El Salvador

Last updated: August 23, 2025

In San Alejo, El Salvador, the average temperature in October is a pleasant 27°C (80°F), with daily highs reaching up to 34°C (94°F) and lows dipping to 21°C (69°F). Expect 331 mm (13.0 in) of precipitation over about 25 days, contributing to an average humidity of 77%. Prepare for a warm and wet month!

October Temperature in San Alejo

In October in San Alejo, the average temperature is 27°C (80°F). Maximums can reach 34°C (94°F), while minimums can drop to as low as 21°C (69°F). This pleasant climate makes San Alejo an ideal destination for travelers seeking warm weather adventures.

October Weather in San Alejo: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in San Alejo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Alejo, October typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 21°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec828486868482848381808081
Data source: Temperature data for San Alejo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in San Alejo

In San Alejo in October, the precipitation amount is 331 mm (13.0 in) over a span of 25 days.

October Precipitation Trends in San Alejo

The chart displays monthly precipitation patterns in San Alejo, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In San Alejo, October typically receives around 331 mm (13.0 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec1162924127480222248331553
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in San Alejo

In San Alejo in October humidity is 77%. With an average temperature of 27°C (80°F), this humidity feels like walking through a warm, damp blanket that clings to your skin, making outdoor activities feel more strenuous and requiring frequent breaks and hydration for comfort.

October Average Humidity in San Alejo

This chart illustrates the average monthly humidity levels in San Alejo, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in San Alejo 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in San Alejo

In San Alejo in October, 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 San Alejo.

Maximum UV Index Levels in San Alejo for October

The chart shows the monthly maximum UV Index (UVI) for San Alejo in October, 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 October, the maximum UV index in San Alejo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11121414141413131313109
Data source: San Alejo October 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 October Weather in San Alejo Compares to Other Months

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

This table compares monthly weather conditions in San Alejo, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (82°F)1 mm (0.0 inches)63%extreme
February Weather29°C (84°F)1 mm (0.0 inches)62%extreme
March Weather30°C (86°F)6 mm (0.2 inches)59%extreme
April Weather30°C (86°F)29 mm (1.1 inches)59%extreme
May Weather29°C (84°F)241 mm (9.5 inches)59%extreme
June Weather28°C (82°F)274 mm (10.8 inches)68%extreme
July Weather29°C (84°F)80 mm (3.1 inches)77%extreme
August Weather28°C (83°F)222 mm (8.7 inches)79%extreme
September Weather27°C (82°F)248 mm (9.8 inches)77%extreme
October Weather27°C (80°F)331 mm (13.0 inches)77%extreme
November Weather27°C (80°F)55 mm (2.2 inches)75%very high
December Weather27°C (81°F)3 mm (0.1 inches)66%very high

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