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May Weather in Santa Clara, United States

Last updated: June 24, 2025

In May, the average temperature in Santa Clara, United States hovers around 20°C (68°F), making it a pleasant time to visit. Daily temperatures can vary significantly, ranging from a cool 3°C (38°F) to a scorching 36°C (98°F). Visitors can expect minimal rainfall, with an average precipitation amount of 14 mm (0.5 in) over just 2 days. The overall humidity sits at a comfortable 45%, ensuring a delightful climate for exploration.

May Temperature in Santa Clara

In May in Santa Clara, the average temperature is 20°C (68°F). Maximum temperatures can reach 36°C (98°F), while minimums can drop to as low as 3°C (38°F). Be prepared for a range of weather conditions when traveling to Santa Clara during this time.

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

The chart illustrates May temperature patterns in Santa Clara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Clara, May typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (98°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec394350606881868576605040
Data source: Temperature data for Santa Clara 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 Clara

In Santa Clara in May, the precipitation amount reaches 14 mm (0.5 in) over a span of 2 days.

May Precipitation Trends in Santa Clara

The chart displays monthly precipitation patterns in Santa Clara, 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 Clara, May typically receives around 14 mm (0.5 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec45384411141895132734
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Santa Clara

In Santa Clara in May humidity is 45%. With an average temperature of 20°C (68°F), this humidity feels like a refreshing embrace, making it comfortable for traveling and exploring the sights without feeling overly sticky or weighed down.

May Average Humidity in Santa Clara

This chart illustrates the average monthly humidity levels in Santa Clara, 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 Clara is approximately 45%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%82%72%62%45%34%30%31%47%62%77%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Santa Clara

In Santa Clara in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Santa Clara.

Maximum UV Index Levels in Santa Clara for May

The chart shows the monthly maximum UV Index (UVI) for Santa Clara 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 Clara typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Santa Clara 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 Clara Compares to Other Months

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

This table compares monthly weather conditions in Santa Clara, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)45 mm (1.8 inches)80%moderate
February Weather6°C (43°F)38 mm (1.5 inches)82%high
March Weather10°C (51°F)44 mm (1.7 inches)72%very high
April Weather16°C (61°F)11 mm (0.4 inches)62%very high
May Weather20°C (68°F)14 mm (0.5 inches)45%extreme
June Weather27°C (82°F)1 mm (0.0 inches)34%extreme
July Weather30°C (86°F)8 mm (0.3 inches)30%extreme
August Weather29°C (85°F)9 mm (0.4 inches)31%extreme
September Weather25°C (76°F)5 mm (0.2 inches)47%very high
October Weather16°C (60°F)13 mm (0.5 inches)62%high
November Weather10°C (50°F)27 mm (1.1 inches)77%moderate
December Weather5°C (40°F)34 mm (1.3 inches)80%moderate

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