September weather forecast
Rio Hondo, Guatemala

September, the first month of the autumn in Rio Hondo, is still a warm month, with temperature in the range of an average low of 18.7°C (65.7°F) and an average high of 29.5°C (85.1°F).

Temperature

Rio Hondo notes an average high-temperature of a still moderately hot 29.5°C (85.1°F) in September, hardly diverging from August. During September, the average low-temperature is a comfortable 18.7°C (65.7°F).

Heat index

For September, the heat index is computed to be a torrid 37°C (98.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in September is 83%.

Rainfall

In September, the rain falls for 23.2 days. Throughout September, 98mm (3.86") of precipitation is accumulated. In Rio Hondo, Guatemala, during the entire year, the rain falls for 193.9 days and collects up to 636mm (25.04") of precipitation.

Daylight

In Rio Hondo, the average length of the day in September is 12h and 13min.
On the first day of September in Rio Hondo, sunrise is at 05:46 and sunset at 18:10. On the last day of the month, sunrise is at 05:48 and sunset at 17:48 CST.

Sunshine

The average sunshine in September is 8.3h.

UV index

In Rio Hondo, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.