Guatemala City
Guatemala
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Guatemala City, Guatemala

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

Temperature

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

Heat index

In May, the average heat index is estimated at 29.7°C (85.5°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 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, clothing). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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, Guatemala, is 77.3%.

Rainfall

In Guatemala City, during 12.4 rainfall days, 128.9mm (5.1") of precipitation is typically accumulated. In Guatemala City, during the entire year, the rain falls for 125.2 days and collects up to 1274.8mm (50.2") of precipitation.

Daylight

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

Sunshine

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 of 11, and more, symbolizes an excessive health risk from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 12 in May transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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.

What is the temperature in May in Guatemala City?

In Guatemala City, Guatemala, in May, the average high-temperature is 27.1°C (80.8°F), and the average low-temperature is 16.8°C (62.2°F). In May, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines relative humidity and air temperature, is evaluated at 29.7°C (85.5°F).

What is the average humidity in May in Guatemala City?

In May, the average relative humidity in Guatemala City is 77.3%.

How much does it rain in Guatemala City in May?

In Guatemala City, Guatemala, in May, it is raining for 12.4 days, with typically 128.9mm (5.1") of accumulated precipitation.

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

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

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

The average sunshine in May is 5.9h.

When is 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, Guatemala.

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

The average daily maximum UV index in May in Guatemala City, Guatemala, is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from unprotected exposure to the UV radiation.
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).

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%).

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 lowest rainfall) is January (2.8mm).

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 lowest number of rainy days is February (1.5 days).

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 shortest days is December (Average daylight: 11.3h).

  • Average sunshine in May: 5.9h

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

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).