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May Weather in El Tumbador, Guatemala

Last updated: August 23, 2025

In May, the average temperature in El Tumbador, Guatemala hovers around 26°C (79°F), making it pleasantly warm for outdoor activities. However, be prepared for temperature fluctuations, as the minimum can dip to 18°C (65°F) while the maximum can soar up to 35°C (95°F). With 588 mm (23.1 in) of precipitation expected over 30 days, you'll want to bring an umbrella! The air tends to be moderately humid, with an average humidity level of 65%, adding to the tropical feel of the month.

May Temperature in El Tumbador

In May in El Tumbador, the average temperature is 26°C (79°F). Maximum temperatures can reach 35°C (95°F), while the minimum can drop to as low as 18°C (65°F). This makes it an ideal time for travelers to enjoy a warm climate while exploring the outdoor attractions.

May Weather in El Tumbador: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in El Tumbador, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Tumbador, May typically has an average temperature of 26°C (79°F), with highs reaching up to 35°C (95°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec757778797977787877777675
Data source: Temperature data for El Tumbador 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 El Tumbador

In El Tumbador in May, the precipitation amount is 588 mm (23.1 in) over the course of 30 days.

May Precipitation Trends in El Tumbador

The chart displays monthly precipitation patterns in El Tumbador, 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 El Tumbador, May typically receives around 588 mm (23.1 inches) of precipitation spread over approximately 30 days.
JanFebMarAprMayJunJulAugSepOctNovDec31297616458850854162459562029250
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in El Tumbador

In El Tumbador in May, humidity is 65%. With an average temperature of 26°C (79°F), this humidity feels like a warm, enveloping blanket, making travel quite sticky and uncomfortable.

May Average Humidity in El Tumbador

This chart illustrates the average monthly humidity levels in El Tumbador, 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 El Tumbador is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in El Tumbador

In El Tumbador 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 El Tumbador, you can check here.

Maximum UV Index Levels in El Tumbador for May

The chart shows the monthly maximum UV Index (UVI) for El Tumbador 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 El Tumbador typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121314141413131312109
Data source: El Tumbador 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 El Tumbador Compares to Other Months

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

This table compares monthly weather conditions in El Tumbador, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)31 mm (1.2 inches)76%very high
February Weather25°C (77°F)29 mm (1.1 inches)68%extreme
March Weather25°C (78°F)76 mm (3.0 inches)59%extreme
April Weather26°C (79°F)164 mm (6.4 inches)57%extreme
May Weather26°C (79°F)588 mm (23.1 inches)65%extreme
June Weather25°C (78°F)508 mm (20.0 inches)66%extreme
July Weather26°C (78°F)540 mm (21.3 inches)75%extreme
August Weather25°C (78°F)624 mm (24.6 inches)82%extreme
September Weather25°C (77°F)595 mm (23.4 inches)82%extreme
October Weather25°C (77°F)620 mm (24.4 inches)83%extreme
November Weather25°C (77°F)292 mm (11.5 inches)80%very high
December Weather24°C (76°F)50 mm (2.0 inches)76%very high

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