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March Weather in San Sebastian, Mexico

Last updated: August 27, 2025

In March, the average temperature in San Sebastian, Mexico is a pleasant 21°C (70°F). Expect a range that dips down to a cool 9°C (48°F) and rises to a warm 30°C (87°F). With a modest precipitation of 12 mm (0.5 in) over just 3 days, and an average humidity of 59%, it's a great time to enjoy the climate!

March Temperature in San Sebastian

In March in San Sebastian, the average temperature is 21°C (70°F). The maximum can reach 30°C (87°F) and the minimum can be as low as 9°C (48°F). This makes it an ideal time to explore San Sebastian comfortably, whether you're enjoying outdoor activities or relaxing at a café.

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

The chart illustrates March 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, March typically has an average temperature of 21°C (70°F), with highs reaching up to 30°C (87°F) and lows dropping to around 9°C (48°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.

March Precipitation in San Sebastian

In San Sebastian in March, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

March Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In San Sebastian, March typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec131312383384480557502266668
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in San Sebastian

In San Sebastian in March humidity is 59%. With an average temperature of 21°C (70°F), this humidity feels like a pleasantly warm embrace, making it ideal for leisurely strolls and outdoor activities.

March Average Humidity in San Sebastian

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

March UV Index in San Sebastian

In San Sebastian in March, 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 March

The chart shows the monthly maximum UV Index (UVI) for San Sebastian in March, 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 March, the maximum UV index in San Sebastian typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911141414141313141198
Data source: San Sebastian March 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 March 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 March’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 March’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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