September weather forecast
Barrios, Guatemala

September, the first month of the autumn in Barrios, is still a hot month, with temperature in the range of an average high of 30.1°C (86.2°F) and an average low of 21.4°C (70.5°F).

Temperature

September's arrival shows an average high-temperature of a still hot 30.1°C (86.2°F), hardly different from the previous month. Barrios encounters a steady low-temperature average of 21.4°C (70.5°F) throughout the month of September.

Heat index

September's average heat index is appraised at a very hot 37°C (98.6°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The months with the highest humidity are September and October, with an average relative humidity of 78%.

Rainfall

In Barrios, in September, it is raining for 27.7 days, with typically 198mm (7.8") of accumulated precipitation. In Barrios, during the entire year, the rain falls for 222.8 days and collects up to 1340mm (52.76") of precipitation.

Daylight

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

Sunshine

The average sunshine in September is 10.6h.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in September leads to these recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.