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April Weather in San Sebastian, El Salvador

Last updated: August 23, 2025

In April, the average temperature in San Sebastian, El Salvador is a warm 28°C (83°F), with minimums dipping to 19°C (67°F) and maximums soaring up to 39°C (102°F). Expect some moisture, as the area receives about 53 mm (2.1 in) of precipitation over 14 days. With an average humidity of 59%, it’s a time for warm days and occasional showers!

April Temperature in San Sebastian

In April in San Sebastian, the average temperature is 28°C (83°F). Maximum temperatures can reach 39°C (102°F), while the minimum can dip to as low as 19°C (67°F). With such warm weather, travelers can enjoy a variety of outdoor activities and vibrant local culture.

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

The chart illustrates April 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, April typically has an average temperature of 28°C (83°F), with highs reaching up to 39°C (102°F) and lows dropping to around 19°C (67°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.

April Precipitation in San Sebastian

In San Sebastian in April, the precipitation amount is 53 mm (2.1 in) over a period of 14 days.

April Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In San Sebastian, April typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec25553311303136240277314667
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Sebastian

In San Sebastian in April humidity is 59%. With an average temperature of 28°C (83°F), this humidity feels like a warm embrace, making traveling a little sticky but overall comfortable as long as you stay hydrated and take breaks in the shade.

April Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in San Sebastian is approximately 59%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in San Sebastian

In San Sebastian in April, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Sebastian, you can check here.

Maximum UV Index Levels in San Sebastian for April

The chart shows the monthly maximum UV Index (UVI) for San Sebastian in April, 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 April, the maximum UV index in San Sebastian typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11121414141413131313109
Data source: San Sebastian April 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 April 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 April’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 April’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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