August weather forecast
San Luis, Guatemala

The last month of the summer, August, is another hot month in San Luis, Guatemala, with an average temperature fluctuating between 20.8°C (69.4°F) and 31.5°C (88.7°F).

Temperature

San Luis's shift into August sets the average high-temperature at a still hot 31.5°C (88.7°F), a figure that deviates only slightly from July's 31°C (87.8°F). In San Luis, in August, the average low-temperature is an agreeable 20.8°C (69.4°F).

Heat index

August's average heat index is calculated to be an extremely hot 43°C (109.4°F). Attention: Heat exhaustion and heat cramps are anticipated. Prolonged effort can result in heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In August, the average relative humidity is 82%.

Rainfall

In San Luis, in August, during 26.8 rainfall days, 138mm (5.43") of precipitation is typically accumulated. In San Luis, during the entire year, the rain falls for 260.2 days and collects up to 1135mm (44.69") of precipitation.

Daylight

In August, the average length of the day is 12h and 39min.
On the first day of August in San Luis, sunrise is at 05:39 and sunset at 18:29. On the last day of the month, sunrise is at 05:44 and sunset at 18:11 CST.

Sunshine

In San Luis, the average sunshine in August is 8.4h.

UV index

In San Luis, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.