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May Weather in San Juan Bautista, United States

Last updated: June 24, 2025

In San Juan Bautista, United States, the average temperature in May hovers around 14°C (58°F), but don’t be surprised by the extremes—temperatures can dip as low as 4°C (39°F) or soar to a warm 31°C (87°F). Expect about 17 mm (0.7 in) of precipitation over the course of 3 days, contributing to an average humidity level of 71%.

May Temperature in San Juan Bautista

In May in San Juan Bautista, the average temperature is 14°C (58°F). Maximums can reach 31°C (87°F), and minimums can drop to as low as 4°C (39°F). Be prepared for a range of temperatures, making it ideal for layering your clothing during your travels.

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

The chart illustrates May temperature patterns in San Juan Bautista, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan Bautista, May typically has an average temperature of 14°C (58°F), with highs reaching up to 31°C (87°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec505152555863656665615549
Data source: Temperature data for San Juan Bautista 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 Juan Bautista

In San Juan Bautista in May, the precipitation amount is 17 mm (0.7 in) over the course of 3 days.

May Precipitation Trends in San Juan Bautista

The chart displays monthly precipitation patterns in San Juan Bautista, 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 Juan Bautista, May typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec100778326181115153283
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Juan Bautista

In San Juan Bautista in May humidity is 71%. With an average temperature of 14°C (58°F), this humidity feels like a damp embrace, making it essential for travelers to pack light, breathable clothing and stay hydrated while exploring the sights.

May Average Humidity in San Juan Bautista

This chart illustrates the average monthly humidity levels in San Juan Bautista, 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 Juan Bautista is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Juan Bautista

In San Juan Bautista 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 San Juan Bautista.

Maximum UV Index Levels in San Juan Bautista for May

The chart shows the monthly maximum UV Index (UVI) for San Juan Bautista 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 Juan Bautista typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111111109753
Data source: San Juan Bautista 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 Juan Bautista Compares to Other Months

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

This table compares monthly weather conditions in San Juan Bautista, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)99 mm (3.9 inches)82%moderate
February Weather10°C (51°F)76 mm (3.0 inches)84%moderate
March Weather11°C (53°F)83 mm (3.3 inches)82%very high
April Weather13°C (56°F)26 mm (1.0 inches)78%very high
May Weather14°C (58°F)17 mm (0.7 inches)71%extreme
June Weather17°C (63°F)1 mm (0.0 inches)64%extreme
July Weather18°C (65°F)0 mm (0.0 inches)58%extreme
August Weather19°C (67°F)1 mm (0.0 inches)54%very high
September Weather18°C (65°F)5 mm (0.2 inches)55%very high
October Weather16°C (61°F)15 mm (0.6 inches)62%high
November Weather13°C (55°F)32 mm (1.3 inches)78%moderate
December Weather10°C (50°F)83 mm (3.3 inches)80%moderate

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