September weather forecast
Nuevo Progreso, Guatemala

The first month of the autumn, September, is still a hot month in Nuevo Progreso, Guatemala, with an average temperature varying between 30.1°C (86.2°F) and 21.4°C (70.5°F).

Temperature

With September's arrival, Nuevo Progreso's weather records an average high-temperature of a still tropical 30.1°C (86.2°F), marking little difference from August's 30.9°C (87.6°F). Nuevo Progreso experiences an average temperature drop to an agreeable 21.4°C (70.5°F) during September nights.

Heat index

The average heat index in September is estimated at a very hot 37°C (98.6°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Keep in mind the heat index values are meant for areas in shade and with light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. 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 of high significance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Nuevo Progreso, the average relative humidity in September is 77%.

Rainfall

In Nuevo Progreso, in September, it is raining for 27.5 days, with typically 159mm (6.26") of accumulated precipitation. In Nuevo Progreso, during the entire year, the rain falls for 222.6 days and collects up to 1301mm (51.22") of precipitation.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September, sunrise is at 05:55 and sunset at 18:19. On the last day of the month, sunrise is at 05:57 and sunset at 17:57 CST.

Sunshine

In Nuevo Progreso, the average sunshine in September is 10.9h.

UV index

The months with the lowest UV index are January, May, June, August through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.