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May Weather in San Sebastian del Sur, Mexico

Last updated: August 27, 2025

In San Sebastian del Sur, Mexico, the average temperature in May is a comfortable 21°C (71°F). Expect minimums of 8°C (47°F) and maximums reaching 34°C (93°F). During this time, the region experiences approximately 36 mm (1.4 in) of precipitation spread over 6 days, coupled with an average humidity of 67%.

May Temperature in San Sebastian del Sur

In May in San Sebastian del Sur, the average temperature is 21°C (71°F). Maximum temperatures can reach 34°C (93°F), while minimum temperatures can dip as low as 8°C (47°F). Overall, it's advisable to pack for both warm days and cooler evenings while traveling during this time.

May Weather in San Sebastian del Sur: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Sebastian del Sur, 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 del Sur, May typically has an average temperature of 21°C (71°F), with highs reaching up to 34°C (93°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec606266687069676867676461
Data source: Temperature data for San Sebastian del Sur 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.

May Precipitation in San Sebastian del Sur

In San Sebastian del Sur in May, the total precipitation amount is 36 mm (1.4 in), which falls over the course of 6 days.

May Precipitation Trends in San Sebastian del Sur

The chart displays monthly precipitation patterns in San Sebastian del Sur, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In San Sebastian del Sur, May typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec111993361762122092231173510
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Sebastian del Sur

In San Sebastian del Sur in May humidity is 67%. With an average temperature of 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making traveling both refreshing and a bit stifling at times, as the air clings to your skin and encourages slow, leisurely exploration.

May Average Humidity in San Sebastian del Sur

This chart illustrates the average monthly humidity levels in San Sebastian del Sur, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in San Sebastian del Sur is approximately 67%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in San Sebastian del Sur

In San Sebastian del Sur in May, 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 del Sur, you can check here.

Maximum UV Index Levels in San Sebastian del Sur for May

The chart shows the monthly maximum UV Index (UVI) for San Sebastian del Sur in May, 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 May, the maximum UV index in San Sebastian del Sur typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111414141513131412108
Data source: San Sebastian del Sur May 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 May Weather in San Sebastian del Sur Compares to Other Months

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

This table compares monthly weather conditions in San Sebastian del Sur, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)11 mm (0.4 inches)70%very high
February Weather17°C (63°F)19 mm (0.8 inches)65%extreme
March Weather19°C (66°F)9 mm (0.4 inches)59%extreme
April Weather20°C (68°F)3 mm (0.1 inches)60%extreme
May Weather21°C (71°F)36 mm (1.4 inches)67%extreme
June Weather21°C (70°F)176 mm (6.9 inches)80%extreme
July Weather20°C (68°F)212 mm (8.4 inches)81%extreme
August Weather20°C (68°F)209 mm (8.2 inches)83%extreme
September Weather19°C (67°F)223 mm (8.8 inches)83%extreme
October Weather19°C (67°F)117 mm (4.6 inches)80%extreme
November Weather18°C (64°F)35 mm (1.4 inches)77%very high
December Weather16°C (61°F)10 mm (0.4 inches)76%very high

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