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August Weather in San Sebastian, El Salvador

Last updated: August 23, 2025

In San Sebastian, El Salvador, the average temperature in August reaches a warm 27°C (80°F). Expect minimums around 20°C (69°F) and highs soaring up to 36°C (97°F). With 240 mm (9.5 in) of precipitation spread over 24 days, a humid atmosphere prevails with an average humidity of 79%. Be prepared for a tropical experience!

August Temperature in San Sebastian

In August in San Sebastian, the average temperature is 27°C (80°F). Maximums can reach 36°C (97°F), while minimums can be as low as 20°C (69°F). This pleasant climate makes San Sebastian an ideal destination for outdoor activities and exploration.

August Weather in San Sebastian: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in San Sebastian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Sebastian, August typically has an average temperature of 27°C (80°F), with highs reaching up to 36°C (97°F) and lows dropping to around 20°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec798182828079818079787979
Data source: Temperature data for San Sebastian 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.

August Precipitation in San Sebastian

In San Sebastian in August, the total precipitation amount is 240 mm (9.5 in) spread over 24 days.

August Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In San Sebastian, August typically receives around 240 mm (9.5 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec25553311303136240277314667
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Sebastian

In San Sebastian in August humidity is 79%. With an average temperature of 27°C (80°F), this humidity feels like walking through a warm, dense blanket, making travel feel sluggish and allowing every step to become noticeably heavier.

August Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in San Sebastian is approximately 79%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in San Sebastian

In San Sebastian in August, 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 Sebastian.

Maximum UV Index Levels in San Sebastian for August

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

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

This table compares monthly weather conditions in San Sebastian, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)2 mm (0.1 inches)63%extreme
February Weather27°C (81°F)5 mm (0.2 inches)62%extreme
March Weather28°C (83°F)5 mm (0.2 inches)59%extreme
April Weather28°C (83°F)53 mm (2.1 inches)59%extreme
May Weather27°C (81°F)311 mm (12.3 inches)59%extreme
June Weather26°C (79°F)303 mm (11.9 inches)68%extreme
July Weather27°C (81°F)136 mm (5.4 inches)77%extreme
August Weather27°C (80°F)240 mm (9.5 inches)79%extreme
September Weather26°C (79°F)277 mm (10.9 inches)77%extreme
October Weather26°C (78°F)314 mm (12.3 inches)77%extreme
November Weather26°C (79°F)66 mm (2.6 inches)75%very high
December Weather26°C (79°F)7 mm (0.3 inches)66%very high

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