April marks the start of
Guatemala City's wet season with a significant increase in rainfall to 31mm (1.22") up from 6mm (0.24") in
March. This dramatic increase in precipitation is accompanied by mildly warmer temperatures. The city suffers the consequences of heat and rainfall including an increase in relative humidity. Daylight hours extend longer than March, which can result in longer periods of sunlight and ultraviolet radiation exposure. The weather conditions in April dramatically transform Guatemala City's atmosphere, marking the city's transition into the wet season.
Temperature
Guatemala City's April weather, with an average high temperature of 27.8°C (82°F) and an average low temperature of 16°C (60.8°F), tends to be the warmest of the year.
Heat index
During April, the heat index is evaluated at a tropical 31°C (87.8°F). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
In Guatemala City, Guatemala, the average relative humidity in April is 74.3%.
Rainfall
In Guatemala City, in April, during 4.7 rainfall days, 31mm (1.22") 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
The average length of the day in April is 12h and 28min.
On the first day of April in Guatemala City, Guatemala, sunrise is at 05:56 and sunset at 18:14. On the last day of the month, sunrise is at 05:39 and sunset at 18:18 CST.
Sunshine
The average sunshine in April is 7.9h.
UV index
The months with the highest UV index are
February through
October, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In April, a daily maximum UV index of 12 leads to the following instructions:
Implement all necessary safeguards, unprotected skin might suffer burns rapidly. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. 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.