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April Weather in San Sebastian, Mexico

Last updated: August 27, 2025

In April, the average temperature in San Sebastian, Mexico is a pleasant 22°C (72°F). Expect a range where the minimum can dip to 10°C (50°F) and the maximum can soar up to 32°C (91°F). Rainfall is minimal, with an average precipitation of only 3 mm (0.1 in) over 0 days, while the air feels comfortably humid at around 60%.

April Temperature in San Sebastian

In April in San Sebastian, the average temperature is 22°C (72°F), with maximums reaching 32°C (91°F) and minimums dropping as low as 10°C (50°F). This mild climate makes San Sebastian an ideal destination for travelers seeking pleasant outdoor experiences.

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 22°C (72°F), with highs reaching up to 32°C (91°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec636670727370696868686563
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 3 mm (0.1 in) during a total of 0 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 3 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec131312383384480557502266668
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 60%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making it pleasant for exploring local attractions while encouraging travelers to stay hydrated and seek shade during midday adventures.

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 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%65%59%60%67%80%81%83%83%80%77%76%
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.
JanFebMarAprMayJunJulAugSepOctNovDec911141414141313141198
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 Weather17°C (63°F)13 mm (0.5 inches)70%very high
February Weather19°C (66°F)13 mm (0.5 inches)65%extreme
March Weather21°C (70°F)12 mm (0.5 inches)59%extreme
April Weather22°C (72°F)3 mm (0.1 inches)60%extreme
May Weather23°C (74°F)83 mm (3.3 inches)67%extreme
June Weather21°C (70°F)383 mm (15.1 inches)80%extreme
July Weather20°C (69°F)480 mm (18.9 inches)81%extreme
August Weather20°C (69°F)557 mm (21.9 inches)83%extreme
September Weather20°C (68°F)502 mm (19.8 inches)83%extreme
October Weather20°C (68°F)266 mm (10.5 inches)80%extreme
November Weather18°C (66°F)66 mm (2.6 inches)77%very high
December Weather17°C (63°F)7 mm (0.3 inches)76%very high

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