April weather forecast
San Luis, Guatemala

April in San Luis, Guatemala, is a tropical spring month, with temperature in the range of an average high of 32.8°C (91°F) and an average low of 20.2°C (68.4°F).

Temperature

The warmest period is April, when temperatures fluctuate between an average high of 32.8°C (91°F) and a low of 20.2°C (68.4°F).

Heat index

Throughout April, the heat index is calculated to be a burning hot 45°C (113°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are especially crucial for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The least humid month in San Luis is April, with an average relative humidity of 74%.

Rainfall

In San Luis, Guatemala, during April, the rain falls for 15.7 days and regularly aggregates up to 52mm (2.05") of precipitation. Throughout the year, in San Luis, there are 260.2 rainfall days, and 1135mm (44.69") of precipitation is accumulated.

Daylight

The average length of the day in April in San Luis, Guatemala, is 12h and 31min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:10. On the last day of April, sunrise is at 05:33 and sunset at 18:16 CST.

Sunshine

With an average of 9.7h of sunshine, April has the most sunshine of the year.

UV index

The months with the highest UV index in San Luis, Guatemala, are March, April and June, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 7 during April translates into the following guidance:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.