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May Weather in Santa Monica, Mexico

Last updated: August 27, 2025

In May, the average temperature in Santa Monica, Mexico is a warm 29°C (84°F). Expect a minimum of 19°C (67°F) and soaring highs of 39°C (103°F). With an average humidity of 77%, the air can feel quite muggy. Be prepared for 51 mm (2.0 in) of rainfall spread over 9 days, making it wise to have your umbrella handy!

May Temperature in Santa Monica

In May in Santa Monica, the average temperature is 29°C (84°F), with maximums reaching up to 39°C (103°F) and minimums dropping as low as 19°C (67°F). This makes it a warm and inviting destination for travelers seeking sunshine and pleasant weather.

May Weather in Santa Monica: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Santa Monica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Monica, May typically has an average temperature of 29°C (84°F), with highs reaching up to 39°C (103°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec737680838479787876777573
Data source: Temperature data for Santa Monica 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 Santa Monica

In Santa Monica in May, the total precipitation amount is 51 mm (2.0 in) spread over 9 days.

May Precipitation Trends in Santa Monica

The chart displays monthly precipitation patterns in Santa Monica, 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 Santa Monica, May typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec223751200157207270108122
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Santa Monica

In Santa Monica in May, humidity is 77%. With an average temperature of 29°C (84°F), this humidity feels like a warm blanket enveloping you, making traveling feel heavy and sticky, and often requiring frequent breaks to find relief in shaded areas or air-conditioned spaces.

May Average Humidity in Santa Monica

This chart illustrates the average monthly humidity levels in Santa Monica, 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 Santa Monica is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Santa Monica

In Santa Monica 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 Santa Monica.

Maximum UV Index Levels in Santa Monica for May

The chart shows the monthly maximum UV Index (UVI) for Santa Monica 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 Santa Monica typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413141413131298
Data source: Santa Monica 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 Santa Monica Compares to Other Months

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

This table compares monthly weather conditions in Santa Monica, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)1 mm (0.1 inches)84%very high
February Weather25°C (77°F)2 mm (0.1 inches)78%extreme
March Weather27°C (81°F)3 mm (0.1 inches)75%extreme
April Weather28°C (84°F)7 mm (0.3 inches)70%extreme
May Weather29°C (84°F)51 mm (2.0 inches)77%extreme
June Weather26°C (79°F)199 mm (7.9 inches)76%extreme
July Weather26°C (78°F)157 mm (6.2 inches)68%extreme
August Weather25°C (78°F)207 mm (8.1 inches)70%extreme
September Weather25°C (77°F)270 mm (10.6 inches)82%extreme
October Weather25°C (77°F)108 mm (4.2 inches)91%extreme
November Weather24°C (75°F)12 mm (0.5 inches)89%very high
December Weather23°C (73°F)1 mm (0.1 inches)88%very high

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