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May Weather in San Jose, Guatemala

Last updated: August 23, 2025

In May, the average temperature in San Jose, Guatemala reaches a warm 30°C (87°F). Temperatures can vary significantly, with a minimum of 21°C (70°F) and a sizzling maximum of 44°C (112°F). Rainfall is also a factor, with 101 mm (4.0 in) of precipitation occurring over about 12 days. The weather is complemented by an average humidity of 53%, making it a lively month to experience!

May Temperature in San Jose

In May in San Jose, the average temperature is 30°C (87°F). Maximum temperatures can reach up to 44°C (112°F), while the minimum can drop as low as 21°C (70°F). Travelers should be prepared for warm weather and varying temperatures during their visit.

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 30°C (87°F), with highs reaching up to 44°C (112°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec757982868783838382807775
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 101 mm (4.0 in) spread over 12 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 101 mm (4.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec291328241012541191422191848848
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 53%. With an average temperature of 30°C (87°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet causing a slight stickiness that encourages travelers to stay hydrated and seek shade during the hottest parts of the day.

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 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%73%59%53%54%55%61%71%77%78%82%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec9111314131313131312108
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)29 mm (1.1 inches)84%very high
February Weather26°C (79°F)12 mm (0.5 inches)73%extreme
March Weather28°C (82°F)28 mm (1.1 inches)59%extreme
April Weather30°C (87°F)24 mm (0.9 inches)52%extreme
May Weather30°C (87°F)101 mm (4.0 inches)53%extreme
June Weather28°C (83°F)254 mm (10.0 inches)55%extreme
July Weather28°C (83°F)119 mm (4.7 inches)61%extreme
August Weather28°C (84°F)142 mm (5.6 inches)71%extreme
September Weather28°C (82°F)219 mm (8.6 inches)77%extreme
October Weather27°C (80°F)184 mm (7.2 inches)78%extreme
November Weather25°C (77°F)88 mm (3.5 inches)82%very high
December Weather24°C (76°F)48 mm (1.9 inches)86%very high

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