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May Weather in San Mateo, Mexico

Last updated: August 27, 2025

In May, the average temperature in San Mateo, Mexico is a pleasant 24°C (76°F), with a minimum of 15°C (60°F) and a maximum of 31°C (88°F). You'll enjoy relatively low precipitation, with just 1 mm (0.1 in) expected over 0 days, and a cozy average humidity of 73%.

May Temperature in San Mateo

In May in San Mateo, the average temperature is 24°C (76°F). Maximums can reach 31°C (88°F), and minimums can be as low as 15°C (60°F). This pleasant climate makes San Mateo an ideal destination for travelers seeking enjoyable outdoor activities.

May Weather in San Mateo: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, May typically has an average temperature of 24°C (76°F), with highs reaching up to 31°C (88°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec737373727580828180807875
Data source: Temperature data for San Mateo 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 Mateo

In San Mateo in May, the precipitation amount is 1 mm (0.1 in) during 0 days, indicating a very dry period.

May Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, 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 Mateo, May typically receives around 1 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec1419001116100272253174268
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Mateo

In San Mateo in May humidity is 73%. With an average temperature of 24°C (76°F), this humidity feels like a warm and sticky embrace, making travel slightly uncomfortable as the air thickens around you, prompting you to seek shade and stay hydrated.

May Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, 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 Mateo is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%70%71%72%73%74%73%74%73%72%69%70%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Mateo

In San Mateo in May, 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 Mateo.

Maximum UV Index Levels in San Mateo for May

The chart shows the monthly maximum UV Index (UVI) for San Mateo 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 Mateo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810131313131213131297
Data source: San Mateo 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 Mateo Compares to Other Months

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

This table compares monthly weather conditions in San Mateo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)14 mm (0.6 inches)68%very high
February Weather23°C (73°F)19 mm (0.7 inches)70%very high
March Weather23°C (73°F)0 mm (0.0 inches)70%extreme
April Weather22°C (73°F)0 mm (0.0 inches)72%extreme
May Weather24°C (76°F)1 mm (0.1 inches)73%extreme
June Weather26°C (80°F)116 mm (4.6 inches)74%extreme
July Weather28°C (82°F)100 mm (3.9 inches)73%extreme
August Weather27°C (82°F)272 mm (10.7 inches)74%extreme
September Weather27°C (81°F)253 mm (10.0 inches)73%extreme
October Weather27°C (80°F)174 mm (6.8 inches)72%extreme
November Weather25°C (78°F)26 mm (1.0 inches)69%very high
December Weather24°C (75°F)8 mm (0.3 inches)70%high

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