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May Weather in San Juan, Bolivia

Last updated: August 22, 2025

In May, the average temperature in San Juan, Bolivia hovers around 13°C (55°F). Prepare for a minimum chill of -2°C (29°F) and a potential maximum warmth of 27°C (82°F). You'll experience about 11 mm (0.4 in) of precipitation spread over 3 days, complemented by an average humidity level of 82%.

May Temperature in San Juan

In May in San Juan, the average temperature is 13°C (55°F). Maximums can reach 27°C (82°F) and minimums can be as low as -2°C (29°F). It's essential to pack layers to accommodate the wide temperature range during your travels.

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

The chart illustrates May temperature patterns in San Juan, 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, May typically has an average temperature of 13°C (55°F), with highs reaching up to 27°C (82°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec605858575552515357606059
Data source: Temperature data for San Juan 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

In San Juan in May, the precipitation amount is 11 mm (0.4 in) over the course of 3 days.

May Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, 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, May typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec98117933611487284860116
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Juan

In San Juan in May, humidity is 82%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities sticky and uncomfortable for traveling.

May Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, 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 is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%90%87%82%59%47%43%60%67%71%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Juan

In San Juan 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.

Maximum UV Index Levels in San Juan for May

The chart shows the monthly maximum UV Index (UVI) for San Juan 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 typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1818161411891214171818
Data source: San Juan 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 Compares to Other Months

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

This table compares monthly weather conditions in San Juan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)98 mm (3.9 inches)87%extreme
February Weather15°C (59°F)117 mm (4.6 inches)88%extreme
March Weather14°C (58°F)93 mm (3.7 inches)89%extreme
April Weather14°C (57°F)36 mm (1.4 inches)87%extreme
May Weather13°C (55°F)11 mm (0.4 inches)82%extreme
June Weather11°C (52°F)4 mm (0.2 inches)59%very high
July Weather11°C (51°F)8 mm (0.3 inches)47%very high
August Weather12°C (53°F)7 mm (0.3 inches)43%extreme
September Weather14°C (58°F)28 mm (1.1 inches)60%extreme
October Weather16°C (60°F)48 mm (1.9 inches)67%extreme
November Weather16°C (61°F)60 mm (2.4 inches)71%extreme
December Weather15°C (60°F)116 mm (4.6 inches)79%extreme

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