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May Weather in San Jose, Mexico

Last updated: August 27, 2025

In San Jose, Mexico, the average temperature in May reaches a warm 31°C (88°F), with minimums dipping to 20°C (69°F) and highs soaring to 42°C (107°F). Expect about 74 mm (2.9 in) of precipitation spread over 11 days during this month, while the average humidity hovers around 59%, adding a touch of moisture to the warm air.

May Temperature in San Jose

In May in San Jose, the average temperature is 31°C (88°F), with maximums reaching up to 42°C (107°F) and minimums dropping as low as 20°C (69°F). This warm climate makes it a great destination for travelers looking to enjoy sunny weather and outdoor activities.

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

The chart illustrates May temperature patterns in San Jose, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jose, May typically has an average temperature of 31°C (88°F), with highs reaching up to 42°C (107°F) and lows dropping to around 20°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec757881858884858483817775
Data source: Temperature data for San Jose 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 Jose

In San Jose in May, the precipitation amount is 74 mm (2.9 in) spread over the course of 11 days.

May Precipitation Trends in San Jose

The chart displays monthly precipitation patterns in San Jose, 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 Jose, May typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec42211732742499014921925111849
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Jose

In San Jose in May humidity is 59%. With an average temperature of 31°C (88°F), this humidity feels like a warm blanket enveloping you, making traveling a bit sticky and requiring frequent breaks to stay refreshed.

May Average Humidity in San Jose

This chart illustrates the average monthly humidity levels in San Jose, 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 Jose is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%73%64%61%60%59%64%76%80%82%83%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Jose

In San Jose 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 Jose.

Maximum UV Index Levels in San Jose for May

The chart shows the monthly maximum UV Index (UVI) for San Jose 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 Jose typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313141313121198
Data source: San Jose 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 Jose Compares to Other Months

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

This table compares monthly weather conditions in San Jose, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)42 mm (1.6 inches)78%very high
February Weather26°C (78°F)21 mm (0.8 inches)73%extreme
March Weather27°C (82°F)17 mm (0.7 inches)64%extreme
April Weather29°C (85°F)32 mm (1.3 inches)61%extreme
May Weather31°C (88°F)74 mm (2.9 inches)59%extreme
June Weather29°C (84°F)249 mm (9.8 inches)59%extreme
July Weather29°C (85°F)90 mm (3.5 inches)64%extreme
August Weather29°C (84°F)149 mm (5.9 inches)76%extreme
September Weather28°C (83°F)219 mm (8.6 inches)80%extreme
October Weather27°C (81°F)251 mm (9.9 inches)82%extreme
November Weather25°C (78°F)118 mm (4.7 inches)83%very high
December Weather24°C (76°F)49 mm (1.9 inches)84%very high

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