September weather forecast
Atescatempa, Guatemala

The first month of the autumn, September, is also a moderately hot month in Atescatempa, Guatemala, with temperature in the range of an average high of 29.3°C (84.7°F) and an average low of 18.9°C (66°F).

Temperature

Atescatempa's entry into September measures an average high-temperature of a warm 29.3°C (84.7°F), closely parallel to the preceding month. In September, the recorded average low-temperature is a refreshing 18.9°C (66°F).

Heat index

The heat index value for September is estimated at a fiery hot 37°C (98.6°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In September, the average relative humidity in Atescatempa, Guatemala, is 85%.

Rainfall

In Atescatempa, in September, it is raining for 24.7 days, with typically 141mm (5.55") of accumulated precipitation. Throughout the year, in Atescatempa, Guatemala, there are 181.4 rainfall days, and 1055mm (41.54") of precipitation is accumulated.

Daylight

The average length of the day in September in Atescatempa is 12h and 13min.
On the first day of September in Atescatempa, sunrise is at 05:47 and sunset at 18:10. On the last day of the month, sunrise is at 05:48 and sunset at 17:48 CST.

Sunshine

In September, the average sunshine in Atescatempa is 7.8h.

UV index

September is the month with the lowest UV index, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: In September, an average UV index of 5 transforms into the following instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.