May weather forecast
Guatemala City, Guatemala

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

Temperature

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

Heat index

The average heat index in May is estimated at a hot 30°C (86°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, pregnancy, differences in body mass, height, and shape, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In May, the average relative humidity in Guatemala City 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, Guatemala, during the entire year, the rain falls for 125.2 days and collects up to 1275mm (50.2") of precipitation.

Daylight

The average length of the day in May in Guatemala City, Guatemala, is 12h and 49min.
On the first day of May, sunrise is at 05:39 and sunset at 18:19. On the last day of the month, sunrise is at 05:31 and sunset at 18:27 CST.

Sunshine

In Guatemala City, 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 extreme threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 12 in May transform into the following instructions:
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 the 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. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used.