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May Weather in San Jose, Argentina

Last updated: August 22, 2025

In San Jose, Argentina, the average temperature in May hovers around a comfortable 12°C (54°F). However, this month can bring a temperature range with a minimum of -3°C (27°F) and a maximum of 29°C (84°F). Expect about 34 mm (1.3 in) of rainfall spread over 7 days, resulting in an average humidity of 82%. Be prepared for a mix of cool and warm days!

May Temperature in San Jose

In May in San Jose, the average temperature is 12°C (54°F). Maximum temperatures can reach 29°C (84°F), while minimum temperatures can drop as low as -3°C (27°F). Be prepared for a wide range of weather conditions when traveling during this time.

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 12°C (54°F), with highs reaching up to 29°C (84°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec716865615448485258636769
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 total precipitation amount is 34 mm (1.3 in) over the course of 7 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 34 mm (1.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec1001338763341566284984117
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 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%66%68%83%82%72%57%42%51%47%58%62%
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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16141310756710131515
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 Weather22°C (71°F)100 mm (3.9 inches)63%extreme
February Weather20°C (68°F)133 mm (5.2 inches)66%extreme
March Weather18°C (65°F)87 mm (3.4 inches)68%extreme
April Weather16°C (61°F)63 mm (2.5 inches)83%very high
May Weather12°C (54°F)34 mm (1.3 inches)82%high
June Weather9°C (48°F)14 mm (0.6 inches)72%moderate
July Weather9°C (48°F)6 mm (0.3 inches)57%high
August Weather11°C (53°F)6 mm (0.2 inches)42%high
September Weather14°C (58°F)28 mm (1.1 inches)51%very high
October Weather17°C (63°F)49 mm (1.9 inches)47%extreme
November Weather19°C (67°F)84 mm (3.3 inches)58%extreme
December Weather21°C (69°F)117 mm (4.6 inches)61%extreme

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