July weather forecast
San Luis, Guatemala

July, the same as June, in San Luis, Guatemala, is a hot summer month, with an average temperature fluctuating between 21°C (69.8°F) and 31°C (87.8°F).

Temperature

The beginning of July records an average high-temperature of a still hot 31°C (87.8°F), almost echoing the conditions of the previous month. San Luis experiences an average low-temperature of 21°C (69.8°F) in the month of July.

Heat index

For most parts of July, the heat index is calculated to be a scorching 42°C (107.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
The metrics for the heat index are tailored for both shady environments and light winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in July is 82%.

Rainfall

In July, the rain falls for 25.4 days. Throughout July, 104mm (4.09") of precipitation is accumulated. Throughout the year, there are 260.2 rainfall days, and 1135mm (44.69") of precipitation is accumulated.

Daylight

The average length of the day in July is 12h and 59min.
On the first day of the month, sunrise is at 05:29 and sunset at 18:34. On the last day of July, in San Luis, sunrise is at 05:38 and sunset at 18:29 CST.

Sunshine

In San Luis, the average sunshine in July is 8.2h.

UV index

The average daily maximum UV index in July in San Luis is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 6 in July suggests the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.