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May Weather in La Union, Guatemala

Last updated: August 23, 2025

In La Union, Guatemala, the average temperature in May is a warm 25°C (78°F). While you can enjoy pleasant days, be prepared for a range that sees minimums of 17°C (63°F) and maximums of 39°C (102°F). This month, expect 213 mm (8.4 in) of precipitation spread over 26 days, with an average humidity level hovering around 51%. Stay cool and dry!

May Temperature in La Union

In May in La Union, the average temperature is 25°C (78°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 17°C (63°F). This makes it an ideal month for travelers who enjoy warm weather while still having cooler evenings to relax in.

May Weather in La Union: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in La Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Union, May typically has an average temperature of 25°C (78°F), with highs reaching up to 39°C (102°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec697172777877757576757169
Data source: Temperature data for La Union 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 La Union

In La Union in May, the total precipitation amount is 213 mm (8.4 in) spread over 26 days.

May Precipitation Trends in La Union

The chart displays monthly precipitation patterns in La Union, 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 La Union, May typically receives around 213 mm (8.4 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec8675795621332324126627528618098
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in La Union

In La Union in May, humidity is 51%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, making it perfect for leisurely strolls, yet travelers should stay hydrated to fully enjoy the vibrant sights without feeling sluggish.

May Average Humidity in La Union

This chart illustrates the average monthly humidity levels in La Union, 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 La Union is approximately 51%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%72%61%53%51%52%58%63%71%79%79%74%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in La Union

In La Union in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in La Union, you can check here.

Maximum UV Index Levels in La Union for May

The chart shows the monthly maximum UV Index (UVI) for La Union 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 La Union typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141314141312109
Data source: La Union 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 La Union Compares to Other Months

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

This table compares monthly weather conditions in La Union, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (69°F)86 mm (3.4 inches)80%very high
February Weather22°C (71°F)75 mm (3.0 inches)72%extreme
March Weather22°C (73°F)78 mm (3.1 inches)61%extreme
April Weather25°C (77°F)56 mm (2.2 inches)53%extreme
May Weather25°C (78°F)213 mm (8.4 inches)51%extreme
June Weather25°C (77°F)323 mm (12.7 inches)52%extreme
July Weather24°C (75°F)241 mm (9.5 inches)58%extreme
August Weather24°C (76°F)266 mm (10.5 inches)63%extreme
September Weather24°C (76°F)275 mm (10.8 inches)71%extreme
October Weather24°C (75°F)286 mm (11.3 inches)79%extreme
November Weather22°C (71°F)180 mm (7.1 inches)79%very high
December Weather21°C (70°F)98 mm (3.8 inches)74%very high

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