May weather forecast
Guatemala City, Guatemala

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

Weather in May

The last month of the spring, May, is another warm month in Guatemala City, Guatemala, with average temperature varying between 16.8°C (62.2°F) and 27.1°C (80.8°F).

Temperature

In May, the average high-temperature is practically the same as in April - a still warm 27.1°C (80.8°F). The average low-temperature, in May, is 16.8°C (62.2°F).

Heat index

In May, the average heat index is appraised at 29.7°C (85.5°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, metabolic differences, wind), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in May is 77.3%.

Rainfall

In Guatemala City, it is raining for 12.4 days, with typically 128.9mm (5.07") of accumulated precipitation. In Guatemala City, during the entire year, the rain falls for 125.2 days and collects up to 1274.8mm (50.19") of precipitation.

Daylight

In May, the average length of the day in Guatemala City is 12.8h.

Sunshine

In Guatemala City, the average sunshine is 5.9h.

UV index

Months with the highest UV index in Guatemala City are February through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Protect yourself by liberally applying a sunscreen of at least 30 SPF. Sunscreen prevents sunburn and decreases the damaging effects of Sun's radiation on the immune system.
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FAQ

What is the temperature in May in Guatemala City?

In May, in Guatemala City, the average high-temperature is 27.1°C (80.8°F), and the average low-temperature is 16.8°C (62.2°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in May is appraised at 29.7°C (85.5°F).

What is the average humidity in May in Guatemala City?

In May, the average relative humidity is 77.3%.

How many days does it rain in May in Guatemala City?

In Guatemala City, in May, during 12.4 rainfall days, 128.9mm (5.07") of precipitation is typically accumulated.

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

In May, the average length of the day is 12.8h.

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

The average sunshine in May is 5.9h.

What is the month with the highest UV index in Guatemala City?

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

How high is the UV index in May in Guatemala City?

The average daily maximum UV index in May in Guatemala City is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from unsafe exposure to the Sun's UV rays.

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

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: 12.8h

The month with the longest days is June (Average daylight: 13h).
The month with the shortest days is December (Average daylight: 11.3h).

  • Average sunshine in May: 5.9h

The month with the most sunshine is February (Average sunshine: 8.4h).
The month with the least sunshine is June (Average sunshine: 5.2h).

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Average UV index in May
Guatemala City, Guatemala

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

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).

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