May weather forecast
Guatemala City, Guatemala

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The iconic buildings of the cathedral in Guatemala City, Guatemala
The iconic buildings of the cathedral in Guatemala City, Guatemala

Weather in May

Guatemala City encounters a major shift in weather during May, with the highest rainfall volume recorded at 129mm (5.08"). The significant precipitation is a reflection of the effusive wet season. The increase in rainfall is coupled with the highest humidity throughout the year. Temperature variations are insignificant compared to April. Extremely high ultraviolet radiation exists despite the reduction in hours of sunshine.

Temperature

Guatemala City's shift into May is marked by a subtle change to a still moderately hot 27.1°C (80.8°F) from April's 27.8°C (82°F) in temperature. Guatemala City observes an average low-temperature of 16.8°C (62.2°F) during May.

Heat index

The heat index value for May is calculated to be a tropical 30°C (86°F). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

The average relative humidity in May is 77.3%.

Rainfall

In Guatemala City, in May, during 12.4 rainfall days, 129mm (5.08") of precipitation is typically accumulated. In Guatemala City, during the entire year, the rain falls for 125.2 days and collects up to 1275mm (50.2") of precipitation.

Daylight

In May, the average length of the day in Guatemala City is 12h and 49min.
On the first day of the month, sunrise is at 05:38 and sunset at 18:19. On the last day of May, sunrise is at 05:31 and sunset at 18:27 CST.

Sunshine

In Guatemala City, Guatemala, the average sunshine in May is 5.9h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 12 in May leads to these guidelines:
Take every vital safeguard, as unprotected skin and eyes may suffer burns rapidly. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Shield yourself from sunburn by using sunscreen of a minimum 30 SPF. This also limits the Sun's harmful effects on the immune system.
Updated: Feb 15, 2024 | Published by: Weather Atlas | Resources

Frequently asked questions

What is the average May temperature in Guatemala City?

The average high-temperature, in May, in Guatemala City, is 27.1°C (80.8°F), while the average low-temperature is 16.8°C (62.2°F). In May, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 30°C (86°F).

What is the average humidity in May in Guatemala City?

In May, the average relative humidity is 77.3%.

How much does it rain in Guatemala City in May?

In May, the rain falls for 12.4 days. Throughout May, 129mm (5.08") of precipitation is accumulated.

How many hours of daylight does Guatemala City have in May?

In May, the average day length in Guatemala City, Guatemala, is 12h and 49min.

When are sunrise and sunset in May in Guatemala City?

In May, on the first day of the month, sunrise is at 05:38 and sunset at 18:19. On the last day of the month, in Guatemala City, sunrise is at 05:31 and sunset at 18:27 CST.

How long on average sun shines in May in Guatemala City?

In May, the average sunshine duration in Guatemala City is 5.9h.

What are the months with the highest UV index in Guatemala City?

February through October, with an average maximum UV index of 12, are months with the highest UV index in Guatemala City.

What is the UV index reading in May in Guatemala City?

In Guatemala City, the average daily maximum UV index in May is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Guatemala City, Guatemala

Average temperature in May - Guatemala City, Guatemala
  • Average high temperature in May: 27.1°C

The warmest month (with the highest average high temperature) is April (27.8°C).
The month with the lowest average high temperature is December (23.9°C).

  • Average low temperature in May: 16.8°C

The months with the highest average low temperature are May and June (16.8°C).
The coldest month (with the lowest average low temperature) is January (13.2°C).

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Average humidity in May
Guatemala City, Guatemala

Average humidity in May - Guatemala City, Guatemala
  • Average humidity in May: 77.3%

The month with the highest relative humidity is September (84.5%).
The month with the lowest relative humidity is March (73.2%).

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Average rainfall in May
Guatemala City, Guatemala

Average rainfall in May - Guatemala City, Guatemala
  • Average rainfall in May: 128.9mm

The wettest month (with the highest rainfall) is June (271.8mm).
The driest month (with the least rainfall) is January (2.8mm).

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Average rainfall days in May
Guatemala City, Guatemala

Average rainfall days in May - Guatemala City, Guatemala
  • Average rainfall days in May: 12.4 days

The month with the highest number of rainy days is June (21.1 days).
The month with the least rainy days is February (1.5 days).

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Average daylight in May /
Average sunshine in May
Guatemala City, Guatemala

Average daylight in May / Average sunshine in May - Guatemala City, Guatemala
  • Average daylight in May: 12h and 5min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in May: 5h and 5min

The month with the most sunshine is February (Average sunshine: 8h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 12min).

[Resources]

Average UV index in May
Guatemala City, Guatemala

Average UV index in May - Guatemala City, Guatemala
  • Average UV index in May: 12

The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 9).

[Resources]

Guatemala City, Guatemala

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