June weather forecast
San Luis, Guatemala

The first month of the summer, June, is also a hot month in San Luis, Guatemala, with temperature in the range of an average low of 21.5°C (70.7°F) and an average high of 31.1°C (88°F).

Temperature

The average high-temperature during June is a still tropical 31.1°C (88°F), almost matching the conditions of the preceding month. During June, the temperature is averaged to a low of 21.5°C (70.7°F) at night.

Heat index

Throughout June, the heat index is calculated to be a blisteringly hot 42°C (107.6°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Be advised, the heat index considers values for conditions in shade and with a light breeze. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. 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. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In San Luis, the average relative humidity in June is 83%.

Rainfall

In San Luis, Guatemala, in June, it is raining for 25.8 days, with typically 146mm (5.75") of accumulated precipitation. Throughout the year, in San Luis, there are 260.2 rainfall days, and 1135mm (44.69") of precipitation is accumulated.

Daylight

June has the longest days of the year, with an average of 13h and 6min of daylight.
On the first day of the month, sunrise is at 05:24 and sunset at 18:26. On the last day of June, sunrise is at 05:29 and sunset at 18:33 CST.

Sunshine

In June, the average sunshine in San Luis is 8.5h.

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 of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In June, the maximum UV index of 7 translates into these guidelines:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.